MESON Chess Problem Database
Problem Display
PID: 222715 (2N5/2ppp3/2RqR3/3k1p2/1P3P2/2BB4/1P4K1/3N2Q1 w - - 0 1)
Mackay, Donald
Charleston Sunday News, 1883
#2
11 + 6
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Kxe6
- 2.Bc4#
- 1...Qxb4
- 2.Se3#
- 1...Qxf4
- 2.Sxe7#
- 2.Qc5#
- 1...Qc5
- 2.Qxc5#
- 1...Qe5
- 2.Sxe7#
- 2.Qc5#
- 1...Qxc6
- 2.Re5#
- 1...Qxe6
- 2.Rc5#
- 2.Qc5#
- 1...Kxe6
- Tries
- 1.Kh1?
- 1...Kxc6
- 2.Qg2#
- 1...Kxe6
- 2.Bc4#
- 2.Qg8#
- 1...Qxb4
- 2.Se3#
- 1...Qxf4
- 2.Sxe7#
- 2.Qc5#
- 1...Qxc6
- 2.Re5#
- 1...Qxe6
- 2.Rc5#
- 2.Qc5#
- 1...dxe6
- 2.Qg2#
- 1...Qc5
- 2.Qxc5#
- 2.Qg2#
- 1...Qe5
- 2.Sxe7#
- 2.Qc5#
- 1...dxc6!
- 1...Kxc6
- 1.Kh3?
- 1...Kxc6
- 2.Qh1#
- 2.Qg2#
- 1...Kxe6
- 2.Bc4#
- 2.Qg8#
- 1...Qxb4
- 2.Se3#
- 1...Qxf4
- 2.Sxe7#
- 2.Qc5#
- 1...Qxc6
- 2.Re5#
- 1...Qxe6
- 2.Rc5#
- 2.Qc5#
- 1...dxe6
- 2.Qh1#
- 2.Qg2#
- 1...Qc5
- 2.Qxc5#
- 2.Qh1#
- 2.Qg2#
- 1...Qe5
- 2.Sxe7#
- 2.Qc5#
- 1...dxc6!
- 1...Kxc6
- 1.Se3+?
- 1...Kxe6
- 2.Bc4#
- 1...Kxc6!
- 1...Kxe6
- 1.Sxe7+?
- 1...Qxe7
- 2.Se3#
- 2.Bc4#
- 2.Qd4#
- 1...Kxe6!
- 1...Qxe7
- 1.Bb5?
- 1...Kxe6
- 2.Bc4#
- 1...Qxb4
- 2.Se3#
- 2.Re5#
- 1...Qxf4
- 2.Sxe7#
- 2.Qc5#
- 1...Qxc6
- 2.Re5#
- 1...Qxe6
- 2.Qd4#
- 1...dxe6
- 2.Qd4#
- 1...Qc5
- 2.Re5#
- 2.Qxc5#
- 1...Qe5
- 2.Rxe5#
- 1...dxc6!
- 1...Kxe6
- 1.Re5+?
- 1...Qxe5
- 2.Qc5#
- 1...Kxc6!
- 1...Qxe5
- 1.Qf2?
- 1...Kxc6
- 2.Qf3#
- 1...Kxe6
- 2.Bc4#
- 1...Qxb4
- 2.Se3#
- 1...Qxf4
- 2.Sxe7#
- 2.Qc5#
- 1...Qxc6
- 2.Re5#
- 1...Qxe6
- 2.Rc5#
- 2.Qc5#
- 1...dxe6
- 2.Qf3#
- 1...Qc5
- 2.Qxc5#
- 2.Qf3#
- 1...Qe5
- 2.Sxe7#
- 2.Qc5#
- 1...dxc6!
- 1...Kxc6
- 1.Qe3?
- 1...Kxc6
- 2.Qf3#
- 1...Qxb4
- 2.Qe5#
- 1...Qxf4
- 2.Sxe7#
- 2.Rc5#
- 2.Qc5#
- 1...Qxc6
- 2.Sxe7#
- 2.Re5#
- 2.Qe5#
- 1...Qxe6
- 2.Rc5#
- 2.Qc5#
- 1...dxe6
- 2.Qf3#
- 1...Qc5
- 2.Rxc5#
- 2.Qxc5#
- 2.Qf3#
- 2.Qe5#
- 1...Qe5
- 2.Sxe7#
- 2.Bc4#
- 2.Qc5#
- 2.Qxe5#
- 1...dxc6!
- 1...Kxc6
- 1.Qd4+?
- 1...Kxe6
- 2.Bc4#
- 2.Qc4#
- 1...Kxc6!
- 1...Kxe6
- 1.Qc5+?
- 1...Kxe6
- 2.Bc4#
- 2.Qc4#
- 2.Qxf5#
- 1...Qxc5!
- 1...Kxe6
- 1.Qa7?
- 1...Kxc6
- 2.Sxe7#
- 2.Qa8#
- 1...Kxe6
- 2.Bc4#
- 2.Qa2#
- 1...Qxb4
- 2.Se3#
- 1...Qxf4
- 2.Sxe7#
- 2.Qc5#
- 2.Qa5#
- 1...Qxc6
- 2.Re5#
- 1...Qxe6
- 2.Rc5#
- 2.Qc5#
- 1...dxc6
- 2.Qa2#
- 1...Qc5
- 2.Qxc5#
- 1...Qe5
- 2.Sxe7#
- 2.Qc5#
- 2.Qa2#
- 2.Qa5#
- 1...dxe6!
- 1...Kxc6
- 1.Qh1?
- 1...Kxc6
- 2.Kf1#
- 2.Kg1#
- 2.Kf2#
- 2.Kh2#
- 2.Kg3#
- 2.Kh3#
- 1...Kxe6
- 2.Bc4#
- 1...Qxb4
- 2.Se3#
- 1...Qxf4
- 2.Sxe7#
- 1...Qxc6
- 2.Re5#
- 1...Qxe6
- 2.Rc5#
- 1...dxe6
- 2.Kf1#
- 2.Kg1#
- 2.Kf2#
- 2.Kh2#
- 2.Kg3#
- 2.Kh3#
- 1...Qc5
- 2.Kf1#
- 2.Kh2#
- 2.Kg3#
- 2.Kh3#
- 1...Qe5
- 2.Sxe7#
- 1...dxc6!
- 1...Kxc6
- 1.b5?
- threat
- 2.Bc4#
- 1...Kxe6
- 2.Bc4#
- 1...Qxf4
- 2.Sxe7#
- 2.Qc5#
- 1...Qxc6
- 2.Re5#
- 1...Qxe6
- 2.Rc5#
- 2.Qd4#
- 2.Qc5#
- 1...dxe6
- 2.Se3#
- 2.Qd4#
- 1...Qb4
- 2.Se3#
- 2.Re5#
- 1...Qc5
- 2.Re5#
- 2.Qxc5#
- 1...Qe5
- 2.Sxe7#
- 2.Rxe5#
- 2.Qc5#
- 1...dxc6!
- threat
- 1.Kh1?
- Keys
- 1.Qf1!
- 1...Kxc6
- 2.Qf3#
- 1...Kxe6
- 2.Bc4#
- 1...Qxb4
- 2.Se3#
- 1...Qxf4
- 2.Sxe7#
- 1...Qxc6
- 2.Re5#
- 1...Qxe6
- 2.Rc5#
- 1...dxc6
- 2.Bc4#
- 1...dxe6
- 2.Qf3#
- 1...Qc5
- 2.Qf3#
- 1...Qe5
- 2.Sxe7#
- 1...Kxc6
- 1.Qf1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- K(a);P_SPINQ(c),S_FLIGHT,XR(J)::B(F)
- Q(c);XP(G)::S(A)
- Q(c);N_GUARD::QAR1(B),XQ(c)
- Q(c);N_GUARD,SBLOCK,XR(I)::R1(J)
- Tries
- Try
- K(D);S_FLIGHT
- Vars
- K(a);P_SPINQ(c),S_FLIGHT,XR(I)::QAB(B)
- Q(c);XP(G)::S(A)
- Q(c);N_GUARD,SBLOCK,XR(I)::R1(J)
- P(e);SBLOCK,XR(J)::QAB(B)
- Refutation
- P(e);XR(I)
- Try
- K(D);S_FLIGHT
- Vars
- Q(c);XP(G)::S(A)
- Q(c);N_GUARD,SBLOCK,XR(I)::R1(J)
- Refutation
- P(e);XR(I)
- Try
- S(A);CHECK
- Vars
- K(a);P_SPINQ(c),S_FLIGHT,XR(J)::B(F)
- Refutation
- K(a);P_SPINQ(c),S_FLIGHT,XR(I)
- Try
- S(K);CHECK,XP(f)
- Refutation
- K(a);P_SPINQ(c),S_FLIGHT,XR(J)
- Try
- B(F);
- Vars
- K(a);P_SPINQ(c),S_FLIGHT,XR(J)::B(F)
- Q(c);N_GUARD,XR(I)::R1(J)
- Q(c);XR(J)::QAR1(B)
- P(e);SBLOCK,XR(J)::QAR1(B)
- Q(c);N_GUARD::R1(J),XQ(c)
- Refutation
- P(e);XR(I)
- Try
- R(J);CHECK
- Vars
- Q(c);XR(J)::QAR1(B)
- Refutation
- K(a);S_FLIGHT,XR(I)
- Try
- Q(B);
- Vars
- K(a);P_SPINQ(c),S_FLIGHT,XR(I)::QAB(B)
- K(a);P_SPINQ(c),S_FLIGHT,XR(J)::B(F)
- Q(c);XP(G)::S(A)
- Q(c);N_GUARD,SBLOCK,XR(I)::R1(J)
- P(e);SBLOCK,XR(J)::QAB(B)
- Refutation
- P(e);XR(I)
- Try
- Q(B);
- Vars
- K(a);P_SPINQ(c),S_FLIGHT,XR(I)::QAB(B)
- Q(c);N_GUARD,XP(G)::QAR1(B)
- P(e);SBLOCK,XR(J)::QAB(B)
- Refutation
- P(e);XR(I)
- Try
- Q(B);CHECK
- Refutation
- K(a);P_SPINQ(c),S_FLIGHT,XR(I)
- Try
- Q(B);CHECK
- Refutation
- Q(c);XQ(B)
- Try
- Q(B);
- Vars
- Q(c);XP(G)::S(A)
- Q(c);N_GUARD,SBLOCK,XR(I)::R1(J)
- P(e);SBLOCK,XR(I)::QAB(B)
- Q(c);N_GUARD::QAR1(B),XQ(c)
- Refutation
- P(e);XR(J)
- Try
- Q(B);
- Vars
- K(a);P_SPINQ(c),S_FLIGHT,XR(J)::B(F)
- Q(c);XP(G)::S(A)
- Q(c);N_GUARD,XP(H)::S(K),XP(f)
- Q(c);N_GUARD,SBLOCK,XR(I)::R1(J)
- Q(c);N_GUARD,SBLOCK,XR(J)::R1(I)
- Q(c);N_GUARD::S(K),XP(f)
- Refutation
- P(e);XR(I)
- Try
- P(G);
- Threat
- B(F)
- Vars
- K(a);P_SPINQ(c),S_FLIGHT,XR(J)::B(F)
- Q(c);N_GUARD,XR(I)::R1(J)
- Refutation
- P(e);XR(I)
- Try
- Actual
- Q(B);
- Vars
- K(a);P_SPINQ(c),S_FLIGHT,XR(I)::QAB(B)
- K(a);P_SPINQ(c),S_FLIGHT,XR(J)::B(F)
- Q(c);XP(G)::S(A)
- Q(c);N_GUARD,XP(H)::S(K),XP(f)
- Q(c);N_GUARD,SBLOCK,XR(I)::R1(J)
- Q(c);N_GUARD,SBLOCK,XR(J)::R1(I)
- P(e);SBLOCK,XR(I)::B(F)
- P(e);SBLOCK,XR(J)::QAB(B)
- Q(c);::QAB(B)
- Q(c);N_GUARD::S(K),XP(f)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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