MESON Chess Problem Database
Problem Display
PID: 255851 (8/q6p/4pP2/1B1pB2Q/1Rn1kP1N/Rn1r1p2/2PP1b2/5N1K w - - 0 1)
Smith, James Alfred John
British Chess Magazine, 1933
#2
12 + 10
SOLUTION
- SOUND
- Sets
- 1...Qe3
- 2.Qxh7#
- 1...Qd4
- 2.Qxh7#
- 1...Qc5
- 2.Qxh7#
- 1...Qb6
- 2.Qxh7#
- 1...Qb8
- 2.Qxh7#
- 1...Qxa3
- 2.Qxh7#
- 1...Qa4
- 2.Qxh7#
- 1...Qa5
- 2.Qxh7#
- 1...Qa6
- 2.Qxh7#
- 1...Qa8
- 2.Qxh7#
- 1...Rxd2
- 2.Qxf3#
- 1...Rd4
- 2.Qxf3#
- 1...Bg1
- 2.Sg3#
- 1...Be3
- 2.Sg3#
- 2.Qxf3#
- 1...Bg3
- 2.Sxg3#
- 1...Bd4
- 2.Sg3#
- 1...Bc5
- 2.Sg3#
- 1...Bb6
- 2.Sg3#
- 1...Sa1
- 2.cxd3#
- 1...Sxd2
- 2.cxd3#
- 1...Sd4
- 2.cxd3#
- 1...Sa5
- 2.cxd3#
- 1...d4
- 2.Bc6#
- 1...h6
- 2.Qg6#
- 1...Qe3
- Tries
- 1.Bxc4?
- threat
- 2.Bxd3#
- 2.cxd3#
- 1...Rxd2
- 2.Bd3#
- 2.Qxf3#
- 1...Qe3
- 2.Bxd3#
- 2.Qxh7#
- 1...Qd4
- 2.Bxd3#
- 2.Qxh7#
- 1...Rc3
- 2.Bd3#
- 1...Re3
- 2.Bd3#
- 1...Rd4
- 2.Bd3#
- 2.Qxf3#
- 1...Sc1
- 2.Bxd3#
- 1...Sc5
- 2.Bxd3#
- 1...d4
- 2.cxd3#
- 1...dxc4!
- threat
- 1.Bd7?
- threat
- 2.Qxh7#
- 1...d4
- 2.Bc6#
- 1...Sd4
- 2.cxd3#
- 1...h6
- 2.Qg6#
- 1...Qxd7!
- threat
- 1.Rxa7?
- threat
- 2.Qxh7#
- 1...d4
- 2.Bc6#
- 1...h6
- 2.Qg6#
- 1...Sd4!
- threat
- 1.Rxc4+?
- 1...Qd4
- 2.Qxh7#
- 1...Rd4
- 2.Qxf3#
- 2.d3#
- 1...Bd4
- 2.Sg3#
- 1...Sd4
- 2.cxd3#
- 1...d4
- 2.Bc6#
- 1...dxc4!
- 1...Qd4
- 1.f7?
- threat
- 2.Qxh7#
- 1...d4
- 2.Bc6#
- 1...Sd4
- 2.cxd3#
- 1...h6
- 2.Qg6#
- 1...Qxf7!
- threat
- 1.Bxc4?
- Keys
- 1.Bd6!
- threat
- 2.Qe5#
- 1...Kd4
- 2.Qe5#
- 1...e5
- 2.Qxe5#
- 1...Qd4
- 2.Qxh7#
- 1...Rd4
- 2.Qxf3#
- 1...Bd4
- 2.Sg3#
- 1...Sd4
- 2.cxd3#
- 1...d4
- 2.Bc6#
- threat
- 1.Bd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 18
- Sets
- Q(i);N_GUARD::QAB(K),XP(j)
- Q(i);N_GUARD,N_SPINS(e)::QAB(K),XP(j)
- Q(i);N_GUARD,XR(E)::QAB(K),XP(j)
- R(c);N_GUARD,XP(D)::QAB1(K),XP(d)
- R(c);N_GUARD,N_SPINS(e)::QAB1(K),XP(d)
- B(a);N_GUARD::S(A)
- B(a);N_GUARD::S(A),XB(a)
- B(a);N_GUARD,N_SPINS(e)::S(A)
- S(b);::P(C),XR(c)
- S(b);XP(D)::P(C),XR(c)
- S(b);N_SPINS(e)::P(C),XR(c)
- P(g);N_SPINS(e),OGATEB::B(I)
- P(j);N_GUARD::QAB(K)
- Tries
- Try
- B(I);XS(e)
- Threat
- DUALS(2)
- Vars
- R(c);::R(F)+B(I),DCHECK
- S(b);::R(F)+B(I),DCHECK,XR(c)
- P(g);::P(C),XR(c)
- Refutation
- P(g);P_SPINP(g),XB(I)
- Try
- B(I);
- Threat
- QAB(K),XP(j)
- Vars
- P(g);N_SPINS(e),OGATEB::B(I)
- S(b);N_SPINS(e)::P(C),XR(c)
- P(j);N_GUARD::QAB(K)
- Refutation
- Q(i);XB(I)
- Try
- R(E);XQ(i)
- Threat
- QAB(K),XP(j)
- Vars
- P(g);N_SPINS(e),OGATEB::B(I)
- P(j);N_GUARD::QAB(K)
- Refutation
- S(b);N_SPINS(e)
- Try
- R(F);CHECK,XS(e)
- Vars
- Q(i);P_SPINQ(i)::QAB(K),XP(j)
- B(a);P_SPINB(a)::S(A)
- S(b);P_SPINS(b)::P(C),XR(c)
- P(g);P_SPINP(g),S_CUTB(a),S_CUTQ(i),S_CUTR(c),S_CUTS(b)::B(I)
- Refutation
- P(g);XR(F)
- Try
- P(L);
- Threat
- QAB(K),XP(j)
- Vars
- P(g);N_SPINS(e),OGATEB::B(I)
- S(b);N_SPINS(e)::P(C),XR(c)
- P(j);N_GUARD::QAB(K)
- Refutation
- Q(i);XP(L)
- Try
- Actual
- B(J);
- Threat
- QAR1(K)
- Vars
- K(f);P-FLIGHT::QAB1(K)
- P(h);::QAR1(K),XP(h)
- Q(i);N_GUARD,N_SPINS(e),SBLOCK::QAB(K),XP(j)
- R(c);N_GUARD,N_SPINS(e),SBLOCK::QAB1(K),XP(d)
- B(a);N_GUARD,N_SPINS(e),SBLOCK::S(A)
- S(b);N_SPINS(e),SBLOCK::P(C),XR(c)
- P(g);N_SPINS(e),OGATEB,SBLOCK::B(I)
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