MESON Chess Problem Database
Problem Display
PID: 11303 (3R3b/2qBBK2/rp6/7n/R1Pk1P1Q/1P1N4/3P1N2/8 w - - 0 1)
Howard, Kenneth Samuel
American Chess Bulletin, 1938
#2
12 + 6
| 5089 | The Enjoyment of Chess Problems | 1943 |
| 5088 | How to Solve Chess Problems | 1945 |
SOLUTION
- SOUND
- Sets
- 1...Qxf4+
- 2.Bf5#
- 1...Qxc4+
- 2.Be6#
- 1...Qc6
- 2.Bxc6#
- 1...Qxd7
- 2.Rxd7#
- 1...Qc8
- 2.Bxc8#
- 1...Qxf4+
- Tries
- 1.Bh3+?
- 1...Qd6
- 2.Rxd6#
- 1...Qd7
- 2.Rxd7#
- 1...Qxd8!
- 1...Qd6
- 1.Bg4+?
- 1...Qd6
- 2.Rxd6#
- 1...Qd7
- 2.Rxd7#
- 1...Qxd8!
- 1...Qd6
- 1.Bb5+?
- 1...Qd6
- 2.Rxd6#
- 1...Qd7
- 2.Rxd7#
- 1...Qxd8!
- 1...Qd6
- 1.Bf5+?
- 1...Qd6
- 2.Rxd6#
- 1...Qd7
- 2.Rxd7#
- 1...Qxd8!
- 1...Qd6
- 1.Bc6+?
- 1...Qd6
- 2.Rxd6#
- 1...Qd7
- 2.Rxd7#
- 1...Qxd8!
- 1...Qd6
- 1.Be6+?
- 1...Qd6
- 2.Rxd6#
- 1...Qd7
- 2.Rxd7#
- 1...Qxd8!
- 1...Qd6
- 1.Bc8+?
- 1...Qd6
- 2.Rxd6#
- 1...Qd7
- 2.Rxd7#
- 1...Qxd8!
- 1...Qd6
- 1.Be8+?
- 1...Qd6
- 2.Rxd6#
- 1...Qd7
- 2.Rxd7#
- 1...Qxd8!
- 1...Qd6
- 1.Bb4?
- threat
- 2.Bc3#
- 1...Qxf4+
- 2.Bf5#
- 1...Qxd7+
- 2.Rxd7#
- 1...Qxc4+!
- threat
- 1.Qh1?
- threat
- 2.Qe4#
- 2.Qd5#
- 2.Qa1#
- 1...Qxc4+
- 2.Be6#
- 2.Rxc4#
- 1...Qxd7
- 2.Rxd7#
- 2.Qe4#
- 2.Qa1#
- 1...Rxa4
- 2.Qe4#
- 2.Qd5#
- 1...Sxf4
- 2.Qe4#
- 2.Qa1#
- 1...Qe5
- 2.Qa1#
- 1...Qd6
- 2.Qe4#
- 2.Qa1#
- 1...Qc5
- 2.Qe4#
- 2.Qa1#
- 1...Qc6
- 2.Bxc6#
- 2.Qa1#
- 1...Qb7
- 2.Qa1#
- 1...Ra5
- 2.Qe4#
- 2.Qa1#
- 1...Sg3
- 2.Qd5#
- 2.Qa1#
- 1...Sf6
- 2.Qa1#
- 1...Qxf4+!
- threat
- 1.c5+?
- 1...Kd5
- 2.Qh1#
- 1...Rxa4!
- 1...Kd5
- 1.f5+?
- 1...Qf4
- 2.Bb5#
- 2.Bc6#
- 2.Be6#
- 2.Bc8#
- 2.Be8#
- 1...Sf4!
- 1...Qf4
- 1.Bh3+?
- Keys
- 1.Ba3!
- threat
- 2.Bb2#
- 1...Qxf4+
- 2.Bf5#
- 1...Qxc4+
- 2.Be6#
- 1...Qxd7+
- 2.Rxd7#
- threat
- 1.Ba3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 2
- Sets
- Q(e);CHECK,N_GUARD,P_SPINQ(e),XP(G)::R(L)+B(I)
- Q(e);CHECK,N_GUARD,P_SPINQ(e),XP(F)::R(L)+B(I)
- Q(e);N_GUARD::R(L)+B(I),XQ(e)
- Q(e);OGATE,P_PINB(J),P_SPINQ(e),XB(I)::R(L),XQ(e)
- Tries
- Try
- B(I);CHECK,P_SPINB(J)
- Vars
- Q(e);N_GUARD,N_PINB(J),P_SPINQ(e)::R(L),XQ(e)
- Q(e);N_GUARD,P_SPINQ(e)::R(L),XQ(e)
- Refutation
- Q(e);N_PINB(J),XR(L)
- Try
- B(I);CHECK,P_SPINB(J)
- Vars
- Q(e);N_GUARD,N_PINB(J),P_SPINQ(e)::R(L),XQ(e)
- Q(e);N_GUARD,P_SPINQ(e)::R(L),XQ(e)
- Refutation
- Q(e);N_PINB(J),XR(L)
- Try
- B(I);CHECK,P_SPINB(J)
- Vars
- Q(e);N_GUARD,N_PINB(J),P_SPINQ(e)::R(L),XQ(e)
- Q(e);N_GUARD,P_SPINQ(e)::R(L),XQ(e)
- Refutation
- Q(e);N_PINB(J),XR(L)
- Try
- B(I);CHECK,P_SPINB(J)
- Vars
- Q(e);N_GUARD,N_PINB(J),P_SPINQ(e)::R(L),XQ(e)
- Q(e);N_GUARD,P_SPINQ(e)::R(L),XQ(e)
- Refutation
- Q(e);N_PINB(J),XR(L)
- Try
- B(I);CHECK,P_SPINB(J)
- Vars
- Q(e);N_GUARD,N_PINB(J),P_SPINQ(e)::R(L),XQ(e)
- Q(e);N_GUARD,P_SPINQ(e)::R(L),XQ(e)
- Refutation
- Q(e);N_PINB(J),XR(L)
- Try
- B(I);CHECK,P_SPINB(J)
- Vars
- Q(e);N_GUARD,N_PINB(J),P_SPINQ(e)::R(L),XQ(e)
- Q(e);N_GUARD,P_SPINQ(e)::R(L),XQ(e)
- Refutation
- Q(e);N_PINB(J),XR(L)
- Try
- B(I);CHECK,P_SPINB(J)
- Vars
- Q(e);N_GUARD,N_PINB(J),P_SPINQ(e)::R(L),XQ(e)
- Q(e);N_GUARD,P_SPINQ(e)::R(L),XQ(e)
- Refutation
- Q(e);N_PINB(J),XR(L)
- Try
- B(I);CHECK,P_SPINB(J)
- Vars
- Q(e);N_GUARD,N_PINB(J),P_SPINQ(e)::R(L),XQ(e)
- Q(e);N_GUARD,P_SPINQ(e)::R(L),XQ(e)
- Refutation
- Q(e);N_PINB(J),XR(L)
- Try
- B(J);P_SPINB(I)
- Threat
- B(J)
- Vars
- Q(e);CHECK,N_PINB(I),P_SPINQ(e),XP(G)::R(L)+B(I)
- Q(e);CHECK,OGATE,P_SPINQ(e),XB(I)::R(L),XQ(e)
- Refutation
- Q(e);CHECK,N_PINB(I),XP(F)
- Try
- Q(H);
- Threat
- DUALS(3)
- Vars
- Q(e);::QAB(H)
- S(b);::QAB(H)
- Refutation
- Q(e);CHECK,XP(G)
- Try
- P(F);CHECK
- Vars
- K(a);P-FLIGHT::QAB(H)
- Refutation
- R(c);XR(E)
- Try
- P(G);CHECK
- Refutation
- S(b);P_SPINS(b)
- Try
- Actual
- B(J);P_SPINB(I)
- Threat
- B(J)
- Vars
- Q(e);CHECK,N_PINB(I),P_SPINQ(e),XP(G)::R(L)+B(I)
- Q(e);CHECK,N_PINB(I),P_SPINQ(e),XP(F)::R(L)+B(I)
- Q(e);CHECK,OGATE,P_SPINQ(e),XB(I)::R(L),XQ(e)
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