MESON Chess Problem Database
Problem Display
PID: 50299 (B7/6N1/3P2pK/1rP1k1Pb/1N3p2/3RBp2/n6b/q1nQ4 w - - 0 1)
Rice, John Michael
Phenix, 1997
#2
10 + 10
| 5174 | Chess Problem Spectrum | 2003 |
SOLUTION
- SOUND
- Sets
- 1...Qd4
- 2.Bxd4#
- 1...Qb1
- 2.Bd4#
- 1...Sxd3
- 2.Sxd3#
- 1...Sc3
- 2.Bd4#
- 1...Qd4
- Tries
- 1.Rc3?
- threat
- 2.Bd4#
- 2.Qd4#
- 2.Qd5#
- 1...Qxc3
- 2.Qd5#
- 1...Rxb4
- 2.Qd5#
- 1...Rxc5
- 2.Rxc5#
- 2.Qd4#
- 1...Sxc3
- 2.Bd4#
- 2.Qd4#
- 1...Sxb4
- 2.Bd4#
- 2.Qd4#
- 1...Rb7
- 2.Qd4#
- 2.Qd5#
- 1...Bg1
- 2.Qd4#
- 2.Qd5#
- 1...Se2
- 2.Sd3#
- 2.Qd5#
- 1...Sb3
- 2.Sd3#
- 2.Qd5#
- 1...Sd3
- 2.Sxd3#
- 1...fxe3!
- threat
- 1.Rd4?
- threat
- 2.Sc6#
- 2.Re4#
- 1...Qxd4
- 2.Bxd4#
- 2.Qxd4#
- 1...Rxc5
- 2.Re4#
- 1...Sxb4
- 2.Re4#
- 1...Qb1
- 2.Sc6#
- 1...Rb6
- 2.Re4#
- 1...Rb7
- 2.Sc6#
- 1...Sc3
- 2.Sc6#
- 1...Rxb4!
- threat
- 1.Qc2?
- threat
- 2.Rd5#
- 1...Rxc5
- 2.Qxc5#
- 1...Sxd3
- 2.Sxd3#
- 1...fxe3
- 2.Qxh2#
- 1...Qd4
- 2.Bxd4#
- 1...Sc3
- 2.Bd4#
- 1...Sxb4!
- threat
- 1.Qxf3?
- threat
- 2.Sc6#
- 2.Rd5#
- 2.Qe4#
- 2.Qd5#
- 1...Rxb4
- 2.Rd5#
- 2.Qd5#
- 1...Rxc5
- 2.Qe4#
- 1...Sxd3
- 2.Sxd3#
- 2.Sc6#
- 2.Qe4#
- 2.Qd5#
- 1...Sxb4
- 2.Qe4#
- 1...fxe3
- 2.Sc6#
- 2.Rd5#
- 2.Qe4#
- 2.Qxe3#
- 2.Qf6#
- 1...Qd4
- 2.Sc6#
- 2.Bxd4#
- 1...Rb6
- 2.Rd5#
- 2.Qe4#
- 2.Qd5#
- 1...Rb7
- 2.Sc6#
- 2.Rd5#
- 2.Qd5#
- 1...Sc3
- 2.Sc6#
- 2.Bd4#
- 1...Bxf3!
- threat
- 1.Qe1?
- threat
- 2.Bxc1#
- 2.Bd4#
- 1...Rxb4
- 2.Bd4#
- 1...Rxc5
- 2.Bxc1#
- 1...Sxd3
- 2.Sxd3#
- 1...fxe3
- 2.Qxe3#
- 1...Qb2
- 2.Bd4#
- 1...Qc3
- 2.Bd4#
- 1...Qd4
- 2.Bxd4#
- 1...Bg1
- 2.Bd4#
- 1...Bg3
- 2.Bd4#
- 1...Sb3
- 2.Bc1#
- 2.Bd4#
- 1...Sc3
- 2.Bd4#
- 1...f2
- 2.Bd4#
- 1...Se2!
- threat
- 1.Rc3?
- Keys
- 1.Qa4!
- threat
- 2.Sc6#
- 1...Rxb4
- 2.Qe8#
- 1...Rxc5
- 2.Qe8#
- 1...Sxd3
- 2.Sxd3#
- 1...Sxb4
- 2.Qxa1#
- 1...Qd4
- 2.Bxd4#
- 1...Rb6
- 2.Qe8#
- threat
- 1.Qa4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 2
- Sets
- Q(a);N_GUARD::B(C),XQ(a)
- Q(a);N_GUARD::B(C)
- S(b);XR(B)::S(D),XS(b)
- S(c);S_CUTQ(a)::B(C)
- Tries
- Try
- R(B);
- Threat
- DUALS(3)
- Vars
- Q(a);XR(B)::QAR1(A)
- R(g);XS(D)::QAR1(A)
- S(b);N_GUARD::S(D),XS(b)
- Refutation
- P(f);XB(C)
- Try
- R(B);
- Threat
- DUALS(2)
- Vars
- R(g);XP(E)::R1(B)
- S(c);XS(D)::R1(B)
- Q(a);::S(D)
- R(g);::R1(B)
- R(g);::S(D)
- S(c);::S(D)
- Refutation
- R(g);XS(D)
- Try
- Q(A);
- Threat
- R1(B)
- Vars
- R(g);OGATE,XP(E)::QAR2(A),XR(g)
- S(b);XR(B)::S(D),XS(b)
- P(f);OGATEB,XB(C)::QAB(A),XB(d)
- Q(a);N_GUARD::B(C),XQ(a)
- S(c);S_CUTQ(a)::B(C)
- Refutation
- S(c);XS(D)
- Try
- Q(A);XP(e)
- Threat
- DUALS(4)
- Vars
- R(g);XP(E)::QAR1(A)
- S(c);XS(D)::QAR1(A)
- Refutation
- B(i);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(g);XS(D)::QAR(A)+B(C),DCHECK
- R(g);XP(E)::QAR(A)+B(C),XS(b)
- S(b);XR(B)::S(D),XS(b)
- P(f);OGATE,P_SPINP(f),XB(C)::QAR2(A),XP(f)
- Q(a);::QAR(A)+B(C),DCHECK
- Q(a);::QAR(A)+B(C),DCHECK,XQ(a)
- B(d);::QAR(A)+B(C),DCHECK
- S(c);::QAR(A)+B(C),DCHECK
- P(e);::QAR(A)+B(C),DCHECK
- Refutation
- S(b);
- Try
- Actual
- Q(A);
- Threat
- S(D)
- Vars
- R(g);OGATE,XS(D)::QAR(A)
- R(g);OGATE,XP(E)::QAR(A)
- S(b);XR(B)::S(D),XS(b)
- S(c);OGATE,XS(D)::QAB(A),XQ(a)
- Q(a);N_GUARD::B(C),XQ(a)
- R(g);OGATE::QAR(A)
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