MESON Chess Problem Database
Problem Display
PID: 271897 (8/8/3p1p2/4kP2/3p3P/4N3/1QKPPN2/8 w - - 0 1)
Stallybrass, Don HR
The Problemist, 1956
#2
8 + 4
SOLUTION
- SOUND
- Sets
- 1...d5
- 2.Qb8#
- 1...d5
- Tries
- 1.Kb1?
- 1...d5
- 2.Qb8#
- 1...Kf4!
- 1...d5
- 1.Kc1?
- 1...d5
- 2.Qb8#
- 1...Kf4!
- 1...d5
- 1.Kd1?
- 1...d5
- 2.Qb8#
- 1...Kf4!
- 1...d5
- 1.Kd3?
- threat
- 2.Qxd4#
- 1...d5
- 2.Qb8#
- 1...Kf4!
- threat
- 1.Sd5?
- 1...Kxd5
- 2.Qb5#
- 1...Kxf5!
- 1...Kxd5
- 1.Qb5+?
- 1...d5
- 2.Qb8#
- 1...Kf4!
- 1...d5
- 1.d3?
- 1...d5
- 2.Qb8#
- 1...Kf4!
- 1...d5
- 1.h5?
- 1...d5
- 2.Qb8#
- 1...Kf4!
- 1...d5
- 1.Kb1?
- Keys
- 1.Qb4!
- 1...d3+
- 2.Sxd3#
- 1...Kf4
- 2.Qxd6#
- 1...dxe3
- 2.Qe4#
- 1...d5
- 2.Qb8#
- 1...d3+
- 1.Qb4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- P(c);OGATEB::QAB(A)
- Tries
- Try
- K(B);S_FLIGHT
- Vars
- P(c);OGATEB::QAB(A)
- Refutation
- K(b);N_SPINP(a),S_FLIGHT
- Try
- K(B);P-FLIGHT
- Vars
- P(c);OGATEB::QAB(A)
- Refutation
- K(b);N_SPINP(a),S_FLIGHT
- Try
- K(B);S_FLIGHT
- Vars
- P(c);OGATEB::QAB(A)
- Refutation
- K(b);N_SPINP(a),S_FLIGHT
- Try
- K(B);S_FLIGHT
- Threat
- QAB1(A),XP(a)
- Vars
- P(c);OGATEB::QAB(A)
- Refutation
- K(b);N_SPINP(a),S_FLIGHT
- Try
- S(F);
- Vars
- K(b);N_SPINP(a),OGATEB,P-FLIGHT,XS(F)::QAR2(A)
- Refutation
- K(b);N_SPINP(a),P-FLIGHT,XP(H)
- Try
- Q(A);CHECK,N_PINP(a)
- Vars
- P(c);OGATEB,P_SPINP(c)::QAB(A)
- Refutation
- K(b);S_FLIGHT
- Try
- P(C);
- Vars
- P(c);OGATEB::QAB(A)
- Refutation
- K(b);N_SPINP(a),S_FLIGHT
- Try
- P(G);
- Vars
- P(c);OGATEB::QAB(A)
- Refutation
- K(b);N_SPINP(a),S_FLIGHT
- Try
- Actual
- Q(A);N_PINP(a)
- Vars
- P(a);CHECK::S(E),XP(a)
- K(b);N_GUARD,P_SPINP(a),S_FLIGHT::QAB(A),XP(c)
- P(a);OGATE,XS(F)::QAR1(A)
- P(c);OGATEB::QAB(A)
Developed and maintained by Brian Stephenson.
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