MESON Chess Problem Database
Problem Display
PID: 228231 (8/8/p3p3/B3P3/B1pNQ1p1/2K1NpPp/p2Prp1n/n3kb1R w - - 0 1)
Reeves, Alfred Christopher
Mat Plus, 2008
#2
10 + 13
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rxd2
- 2.Sg2#
- 1...Rxe3+
- 2.Qxe3#
- 1...Sc2
- 2.Sdxc2#
- 1...Sb3
- 2.Sdc2#
- 1...Rxd2
- Tries
- 1.Sg2+?
- 1...fxg2
- 2.Qxe2#
- 1...hxg2!
- 1...fxg2
- 1.Sxf3+?
- 1...Sxf3
- 2.Rxf1#
- 1...gxf3!
- 1...Sxf3
- 1.Bc2?
- 1...Rxe3+
- 2.Qxe3#
- 1...Rxd2
- 2.Sg2#
- 1...Sxc2
- 2.Sdxc2#
- 1...Sb3!
- 1...Rxe3+
- 1.Bb3?
- 1...Rxe3+
- 2.Qxe3#
- 1...Rxd2
- 2.Sg2#
- 1...Sxb3
- 2.Sdc2#
- 1...Sc2
- 2.Sdxc2#
- 1...cxb3!
- 1...Rxe3+
- 1.Bb4?
- 1...Rxe3+
- 2.Qxe3#
- 1...Rxd2
- 2.Sg2#
- 1...Sc2
- 2.Sdxc2#
- 1...Sb3
- 2.Sdc2#
- 1...a5!
- 1...Rxe3+
- 1.Bb6?
- 1...Rxe3+
- 2.Qxe3#
- 1...Rxd2
- 2.Sg2#
- 1...Sc2
- 2.Sdxc2#
- 1...Sb3
- 2.Sdc2#
- 1...a5!
- 1...Rxe3+
- 1.Bc7?
- 1...Rxe3+
- 2.Qxe3#
- 1...Rxd2
- 2.Sg2#
- 1...Sc2
- 2.Sdxc2#
- 1...Sb3
- 2.Sdc2#
- 1...a5!
- 1...Rxe3+
- 1.Bd8?
- 1...Rxe3+
- 2.Qxe3#
- 1...Rxd2
- 2.Sg2#
- 1...Sc2
- 2.Sdxc2#
- 1...Sb3
- 2.Sdc2#
- 1...a5!
- 1...Rxe3+
- 1.Qc2?
- threat
- 2.Qd1#
- 2.Qc1#
- 1...Rxd2
- 2.Qxd2#
- 1...Sxc2
- 2.Sdxc2#
- 1...Sb3
- 2.Qd1#
- 1...Rxe3+!
- threat
- 1.Qd3?
- 1...Rxd2
- 2.Qxd2#
- 1...Rxe3
- 2.Qxe3#
- 1...Sc2
- 2.Sdxc2#
- 1...Sb3
- 2.Sdc2#
- 1...cxd3!
- 1...Rxd2
- 1.Qf4?
- 1...Rxe3+
- 2.Qxe3#
- 1...Sc2
- 2.Sdxc2#
- 1...Sb3
- 2.Sdc2#
- 1...Rxd2!
- 1...Rxe3+
- 1.Sg2+?
- Keys
- 1.Kxc4!
- 1...Rxd2+
- 2.Sxf1#
- 1...Rxe3+
- 2.d3#
- 1...Sc2
- 2.Sdxc2#
- 1...Sb3
- 2.Sdc2#
- 1...Rxd2+
- 1.Kxc4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(e);XP(B)::QAR(H)+S(D),DCHECK
- R(e);CHECK,OGATE,P_SPINR(e),XS(D)::QAR2(H),XR(e)
- S(a);N_GUARD::S(G),XS(a)
- S(a);N_GUARD::S(G)
- Tries
- Try
- S(D);CHECK,P_PINR(e)
- Vars
- P(h);XS(D)::QAR1(H),XR(e)
- Refutation
- P(i);XS(D)
- Try
- S(G);CHECK,XP(h)
- Vars
- S(g);XS(G)::R1(A),XB(c)
- Refutation
- P(k);XS(G)
- Try
- B(F);
- Vars
- R(e);CHECK,OGATE,P_SPINR(e),XS(D)::QAR2(H),XR(e)
- R(e);XP(B)::QAR(H)+S(D),DCHECK
- S(a);XB(F)::S(G),XS(a)
- Refutation
- S(a);
- Try
- B(F);
- Vars
- R(e);CHECK,OGATE,P_SPINR(e),XS(D)::QAR2(H),XR(e)
- R(e);XP(B)::QAR(H)+S(D),DCHECK
- S(a);N_GUARD,XB(F)::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- P(j);XB(F)
- Try
- B(I);
- Vars
- R(e);CHECK,OGATE,P_SPINR(e),XS(D)::QAR2(H),XR(e)
- R(e);XP(B)::QAR(H)+S(D),DCHECK
- S(a);N_GUARD::S(G),XS(a)
- S(a);N_GUARD::S(G)
- Refutation
- P(l);
- Try
- B(I);
- Vars
- R(e);CHECK,OGATE,P_SPINR(e),XS(D)::QAR2(H),XR(e)
- R(e);XP(B)::QAR(H)+S(D),DCHECK
- S(a);N_GUARD::S(G),XS(a)
- S(a);N_GUARD::S(G)
- Refutation
- P(l);
- Try
- B(I);
- Vars
- R(e);CHECK,OGATE,P_SPINR(e),XS(D)::QAR2(H),XR(e)
- R(e);XP(B)::QAR(H)+S(D),DCHECK
- S(a);N_GUARD::S(G),XS(a)
- S(a);N_GUARD::S(G)
- Refutation
- P(l);
- Try
- B(I);
- Vars
- R(e);CHECK,OGATE,P_SPINR(e),XS(D)::QAR2(H),XR(e)
- R(e);XP(B)::QAR(H)+S(D),DCHECK
- S(a);N_GUARD::S(G),XS(a)
- S(a);N_GUARD::S(G)
- Refutation
- P(l);
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- R(e);OGATE,XP(B)::QAB1(H),XR(e)
- S(a);XQ(H)::S(G),XS(a)
- S(a);::QAR1(H)
- Refutation
- R(e);CHECK,XS(D)
- Try
- Q(H);
- Vars
- R(e);OGATE,XP(B)::QAB1(H),XR(e)
- R(e);OGATE,P_PINQ(H),XS(D)::QAR2(H),XR(e)
- S(a);N_GUARD::S(G),XS(a)
- S(a);N_GUARD::S(G)
- Refutation
- P(j);XQ(H)
- Try
- Q(H);
- Vars
- R(e);CHECK,OGATE,XS(D)::QAR2(H),XR(e)
- S(a);N_GUARD::S(G),XS(a)
- S(a);N_GUARD::S(G)
- Refutation
- R(e);XP(B)
- Try
- Actual
- K(C);P-FLIGHT,XP(j)
- Vars
- R(e);CHECK,P_SPINR(e),XP(B)::QAR(H)+S(D),XB(c)
- R(e);CHECK,N_GUARD,P_SPINR(e),XS(D)::B(I)+P(B)
- S(a);N_GUARD::S(G),XS(a)
- S(a);N_GUARD::S(G)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).