MESON Chess Problem Database
Problem Display
PID: 155197 (q2rr3/8/8/7p/1PpQ4/1PKBP1P1/1PN2P1P/R1Bk1N1R w - - 0 1)
Barnes, Barry Peter
Zadachi i Etyudi, 2013
#2
15 + 6
| 56 | The Problemist | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Qxh1
- 2.Bd2#
- 1...Qg2
- 2.Bd2#
- 1...Qf3
- 2.Bd2#
- 1...Qe4
- 2.Bd2#
- 1...Qd5
- 2.Bd2#
- 1...Qc6
- 2.Bd2#
- 1...Qb7
- 2.Bd2#
- 1...Qxa1
- 2.Sd2#
- 1...Qa2
- 2.Sd2#
- 1...Qa3
- 2.Sd2#
- 1...Qa4
- 2.Sd2#
- 1...Qa5
- 2.Sd2#
- 1...Qa6
- 2.Sd2#
- 1...Qa7
- 2.Sd2#
- 1...Qb8
- 2.Sd2#
- 2.Bd2#
- 1...Qc8
- 2.Sd2#
- 2.Bd2#
- 1...Rd5
- 2.Sd2#
- 1...Rb8
- 2.Bxc4#
- 1...Rc8
- 2.Bxc4#
- 1...Rxe3
- 2.Sfxe3#
- 1...Re4
- 2.Sd2#
- 1...Qxh1
- Tries
- 1.Rb1?
- threat
- 2.Bd2#
- 1...Qa1
- 2.Sd2#
- 1...Qa2
- 2.Sd2#
- 1...cxd3!
- threat
- 1.Rxa8?
- threat
- 2.Sd2#
- 1...Kxc1
- 2.Sd2#
- 2.Ra1#
- 1...Rxe3
- 2.Sfxe3#
- 1...cxd3!
- threat
- 1.Rg1?
- threat
- 2.Sd2#
- 1...Rxe3
- 2.Sfxe3#
- 1...Qh1
- 2.Bd2#
- 1...Qg2
- 2.Bd2#
- 1...cxd3!
- threat
- 1.Qg4+?
- 1...Qf3
- 2.Sd2#
- 2.Bd2#
- 2.Qxf3#
- 1...hxg4!
- 1...Qf3
- 1.Qd5?
- threat
- 2.Sd2#
- 1...Qxd5
- 2.Bd2#
- 1...Rxe3
- 2.Sfxe3#
- 1...cxd3!
- threat
- 1.f3?
- threat
- 2.Sd2#
- 1...Qxf3
- 2.Bd2#
- 1...Rxe3
- 2.Sfxe3#
- 1...cxd3!
- threat
- 1.e4?
- threat
- 2.Sd2#
- 2.Sfe3#
- 1...Qxe4
- 2.Sfe3#
- 2.Bd2#
- 2.Be3#
- 2.Bf4#
- 2.Bg5#
- 2.Bh6#
- 1...Rxe4
- 2.Sfe3#
- 1...cxd3!
- threat
- 1.Rb1?
- Keys
- 1.Qxc4!
- threat
- 2.Be2#
- 1...Rxd3+
- 2.Qxd3#
- 1...Qxa1
- 2.Sd2#
- 1...Rxe3
- 2.Sfxe3#
- 1...Qf3
- 2.Bd2#
- threat
- 1.Qxc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 16
- Sets
- Q(d);N_GUARD,XR(D)::R(A)+B(B)
- Q(d);N_GUARD::R(A)+B(B)
- Q(d);N_GUARD,P_PINP(E),XR(A)::R(D)+S(C)
- Q(d);N_GUARD::R(D)+S(C)
- Q(d);N_GUARD,P_PINP(I)::R(D)+S(C)
- Q(d);N_GUARD,P_PINP(N)::R(D)+S(C)
- R(e);S_CUTQ(d)::R(D)+S(C)
- R(e);N_GUARD::QAR(O)+B(K),XP(b)
- R(f);P_PINB(K),XP(L)::R(D)+S(C),DCHECK,XR(f)
- R(f);S_CUTQ(d)::R(D)+S(C)
- Tries
- Try
- R(A);
- Threat
- R(A)+B(B)
- Vars
- Q(d);N_GUARD,P_PINP(E)::R(D)+S(C)
- Q(d);N_GUARD::R(D)+S(C)
- Refutation
- P(b);P_SPINP(b),XB(K)
- Try
- R(A);XQ(d)
- Threat
- R(D)+S(C)
- Vars
- R(f);P_PINB(K),XP(L)::R(D)+S(C),DCHECK,XR(f)
- Refutation
- P(b);P_SPINP(b),XB(K)
- Try
- R(D);
- Threat
- R(D)+S(C)
- Vars
- R(f);P_PINB(K),XP(L)::R(D)+S(C),DCHECK,XR(f)
- Q(d);N_GUARD::R(A)+B(B)
- Refutation
- P(b);P_SPINP(b),XB(K)
- Try
- Q(O);CHECK
- Refutation
- P(c);XQ(O)
- Try
- Q(O);
- Threat
- R(D)+S(C)
- Vars
- Q(d);N_GUARD,XQ(O)::R(A)+B(B)
- R(f);P_PINB(K),XP(L)::R(D)+S(C),DCHECK,XR(f)
- Refutation
- P(b);P_SPINP(b),XB(K)
- Try
- P(G);
- Threat
- R(D)+S(C)
- Vars
- Q(d);N_GUARD,XP(G)::R(A)+B(B)
- R(f);P_PINB(K),XP(L)::R(D)+S(C),DCHECK,XR(f)
- Refutation
- P(b);P_SPINP(b),XB(K)
- Try
- P(L);
- Threat
- DUALS(2)
- Vars
- R(f);XP(L)::R(D)+S(C),DCHECK
- Refutation
- P(b);P_SPINP(b),XB(K)
- Try
- Actual
- Q(O);XP(b)
- Threat
- B(K)
- Vars
- R(e);CHECK,OGATE,XB(K)::QAR2(O),XR(e)
- Q(d);N_GUARD,P_PINP(E),XR(A)::R(D)+S(C)
- R(f);P_PINB(K),XP(L)::R(D)+S(C),DCHECK,XR(f)
- Q(d);N_GUARD::R(A)+B(B)
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