Red to play and draw
Red 6 pieces. Black 7 pieces. It is amazing what complicated variations can be produced in such situation. Red to play and draw as demonstrated in Main Variation. Based on the ancient book of collected problems “渊深海阔”, as edited and analysed by leading experts Mr. Liu Guobin and Mr Zhu Baowei. Main Variation 1. rR=6 C5=4 (variation 1) 2. R6=4 (var2) P6+1 3. R4-2 P5=6 4. K4=5 C4=8 (variation 3) 5. R1=5 B1+3 (variation 4) 6. C1+9 B7+9 7. C1=5 (var5) C8=5 8. C5-2 B3-5 9. R5+2 R4=5 10.R5-6 P6=5 11.K5+1 (draw) What would happen had Black played 1. ... R4-2 and captured Red Rook? (variation 1) Variation 1 1. ... R4-2 ? 2. R1=6 R4-2 3. C1+9 B7+9 4. C2+9 checkmate Again, look at variation 2, had Red played 2. R1=4 instead of the text move. Variation 2 2. R1=4 ? P5=6 3. K4=5 R4=5 checkmate Variation within a variation! In the above variation 2, what can happen if Red plays 2...