MESON Chess Problem Database
Problem Display
PID: 148280 (2n2Q2/r1n1bNp1/3B2K1/pb2P3/R3BkNR/6pP/2p3P1/2q5 w - - 0 1)
Goldstein, Alexander
The Problemist, 1947
#2
11 + 11
SOLUTION
- SOUND
- Sets
- 1...Qe3
- 2.Sf6#
- 1...Bf1
- 2.Bd3#
- 1...Be2
- 2.Bd3#
- 1...Bd3
- 2.Bxd3#
- 1...Bc6
- 2.Bxc6#
- 1...Bd7
- 2.Bc6#
- 1...Be8
- 2.Bc6#
- 1...Bxh4
- 2.Sg5#
- 1...Bg5
- 2.Sxg5#
- 1...Bxd6
- 2.Sxd6#
- 1...Bd8
- 2.Sxd8#
- 1...Qe3
- Tries
- 1.Bxc2+?
- 1...Bc4
- 2.Rxc4#
- 1...Bxa4!
- 1...Bc4
- 1.Bd3+?
- 1...Bc4
- 2.Rxc4#
- 1...Bxa4!
- 1...Bc4
- 1.Bf3+?
- 1...Bc4
- 2.Rxc4#
- 1...Bxa4!
- 1...Bc4
- 1.Bd5+?
- 1...Bc4
- 2.Rxc4#
- 1...Bxa4!
- 1...Bc4
- 1.Bf5+?
- 1...Bc4
- 2.Rxc4#
- 1...Bxa4!
- 1...Bc4
- 1.Bc6+?
- 1...Bc4
- 2.Rxc4#
- 1...Bxa4!
- 1...Bc4
- 1.Bb7+?
- 1...Bc4
- 2.Rxc4#
- 1...Bxa4!
- 1...Bc4
- 1.Ba8+?
- 1...Bc4
- 2.Rxc4#
- 1...Bxa4!
- 1...Bc4
- 1.Qxc8?
- threat
- 2.Qf5#
- 1...Bd7
- 2.Bc6#
- 1...Se6!
- threat
- 1.e6+?
- 1...Bxd6
- 2.Sxd6#
- 1...Sxd6!
- 1...Bxd6
- 1.Bxc2+?
- Keys
- 1.Bc5!
- threat
- 2.Sf6#
- 1...Bxh4
- 2.Sg5#
- 1...Bxc5
- 2.Sd6#
- 1...Bf6
- 2.Sxf6#
- 1...Qd1
- 2.Be3#
- 1...Be2
- 2.Bd3#
- 1...Bd7
- 2.Bc6#
- 1...Bg5
- 2.Sxg5#
- threat
- 1.Bc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 7
- Sets
- Q(a);SBLOCK::R(F)+S(E)
- B(f);N_GUARD::R(C)+B(D)
- B(f);N_GUARD,P_PINB(D)::R(C)+B(D),XB(f)
- B(f);N_GUARD::R(C)+B(D),XB(f)
- B(f);N_GUARD,P_PINS(J)::R(C)+B(D)
- B(i);N_GUARD,XR(F)::QAR(K)+S(J)
- B(i);N_GUARD::QAR(K)+S(J),XB(i)
- B(i);XB(H)::QAR(K)+S(J),XB(i)
- Tries
- Try
- B(D);CHECK,XP(b)
- Vars
- B(f);N_GUARD,P_SPINB(f)::R(C),XB(f)
- Refutation
- B(f);XR(C)
- Try
- B(D);CHECK
- Vars
- B(f);N_GUARD,P_SPINB(f)::R(C),XB(f)
- Refutation
- B(f);XR(C)
- Try
- B(D);CHECK
- Vars
- B(f);N_GUARD,P_SPINB(f)::R(C),XB(f)
- Refutation
- B(f);XR(C)
- Try
- B(D);CHECK
- Vars
- B(f);N_GUARD,P_SPINB(f)::R(C),XB(f)
- Refutation
- B(f);XR(C)
- Try
- B(D);CHECK
- Vars
- B(f);N_GUARD,P_SPINB(f)::R(C),XB(f)
- Refutation
- B(f);XR(C)
- Try
- B(D);CHECK
- Vars
- B(f);N_GUARD,P_SPINB(f)::R(C),XB(f)
- Refutation
- B(f);XR(C)
- Try
- B(D);CHECK
- Vars
- B(f);N_GUARD,P_SPINB(f)::R(C),XB(f)
- Refutation
- B(f);XR(C)
- Try
- B(D);CHECK
- Vars
- B(f);N_GUARD,P_SPINB(f)::R(C),XB(f)
- Refutation
- B(f);XR(C)
- Try
- Q(K);XS(k)
- Threat
- QAR1(K)
- Vars
- B(f);N_GUARD::R(C)+B(D)
- Refutation
- S(h);
- Try
- P(G);CHECK
- Vars
- B(i);XB(H)::QAR(K)+S(J),XB(i)
- Refutation
- S(k);XB(H)
- Try
- Actual
- B(H);
- Threat
- R(F)+S(E)
- Vars
- B(i);N_GUARD,XR(F)::QAR(K)+S(J)
- B(i);N_GUARD,XB(H)::QAR(K)+S(J)
- B(i);::R(F)+S(E),XB(i)
- Q(a);N_GUARD::B(H)
- B(f);N_GUARD::R(C)+B(D)
- B(i);N_GUARD::QAR(K)+S(J),XB(i)
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