MESON Chess Problem Database
Problem Display
PID: 10342 (8/4R3/1K6/2P3P1/2p1N1Q1/4kP2/p1R1n3/B1NB2n1 w - - 0 1)
Mansfield, Comins
2nd Prize, South African Chess Player, 1963
#2
11 + 5
| 4054 | Complete Mansfield/III | 1999 |
SOLUTION
- SOUND
- Sets
- 1...Sxf3
- 2.Rxe2#
- 1...Sh3
- 2.Rxe2#
- 1...Sxc1
- 2.Sf2#
- 1...Sc3
- 2.Sxc3#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Rc3#
- 1...Sf4
- 2.Qxg1#
- 1...Sxf3
- Tries
- 1.Ka5?
- 1...Sxf3
- 2.Rxe2#
- 1...Sxc1
- 2.Sf2#
- 1...Sc3
- 2.Sxc3#
- 1...Sh3
- 2.Rxe2#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Rc3#
- 1...Sf4
- 2.Qxg1#
- 1...c3!
- 1...Sxf3
- 1.Ka6?
- 1...Sxf3
- 2.Rxe2#
- 1...Sxc1
- 2.Sf2#
- 1...Sc3
- 2.Sxc3#
- 1...Sh3
- 2.Rxe2#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Rc3#
- 1...Sf4
- 2.Qxg1#
- 1...c3!
- 1...Sxf3
- 1.Ka7?
- 1...Sxf3
- 2.Rxe2#
- 1...Sxc1
- 2.Sf2#
- 1...Sc3
- 2.Sxc3#
- 1...Sh3
- 2.Rxe2#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Rc3#
- 1...Sf4
- 2.Qxg1#
- 1...c3!
- 1...Sxf3
- 1.Kb7?
- 1...Sxf3
- 2.Rxe2#
- 1...Sxc1
- 2.Sf2#
- 1...Sc3
- 2.Sxc3#
- 1...Sh3
- 2.Rxe2#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Rc3#
- 1...Sf4
- 2.Qxg1#
- 1...c3!
- 1...Sxf3
- 1.Kc7?
- 1...Sxf3
- 2.Rxe2#
- 1...Sxc1
- 2.Sf2#
- 1...Sc3
- 2.Sxc3#
- 1...Sh3
- 2.Rxe2#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Rc3#
- 1...Sf4
- 2.Qxg1#
- 1...c3!
- 1...Sxf3
- 1.Sxe2?
- threat
- 2.Rc3#
- 1...Kd3
- 2.Sf2#
- 2.Rc3#
- 1...c3
- 2.Rxc3#
- 1...Sxe2!
- threat
- 1.Bd4+?
- 1...Sxd4
- 2.Rc3#
- 1...Kxd4!
- 1...Sxd4
- 1.Rd2?
- 1...Sxf3
- 2.Rxe2#
- 1...Sxc1
- 2.Bd4#
- 1...Sh3
- 2.Rxe2#
- 1...Sg3
- 2.Bd4#
- 1...Sd4
- 2.Bxd4#
- 1...Sf4
- 2.Bd4#
- 2.Qxg1#
- 1...c3
- 2.Rd3#
- 1...Sc3!
- 1...Sxf3
- 1.Rc3+?
- 1...Kd4
- 2.Rd3#
- 2.Qd7#
- 1...Sxc3!
- 1...Kd4
- 1.Re5?
- 1...Sxf3
- 2.Rxe2#
- 1...Sxc1
- 2.Sf2#
- 1...Sc3
- 2.Sxc3#
- 1...Sh3
- 2.Rxe2#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sd6#
- 2.Sf6#
- 2.Rc3#
- 1...Sf4
- 2.Sf2#
- 2.Sg3#
- 2.Sd6#
- 2.Sf6#
- 2.Qxg1#
- 1...c3!
- 1...Sxf3
- 1.Re6?
- 1...Sxf3
- 2.Rxe2#
- 1...Sxc1
- 2.Sf2#
- 1...Sc3
- 2.Sxc3#
- 1...Sh3
- 2.Rxe2#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Rc3#
- 1...Sf4
- 2.Qxg1#
- 1...c3!
- 1...Sxf3
- 1.Rd7?
- 1...Sxf3
- 2.Rxe2#
- 1...Sh3
- 2.Rxe2#
- 1...Sc3
- 2.Rxc3#
- 1...Sg3
- 2.Bd4#
- 2.Rc3#
- 1...Sd4
- 2.Bxd4#
- 2.Rc3#
- 1...Sf4
- 2.Bd4#
- 2.Qxg1#
- 1...c3
- 2.Rd3#
- 1...Sxc1!
- 1...Sxf3
- 1.Re8?
- 1...Sxf3
- 2.Rxe2#
- 1...Sxc1
- 2.Sf2#
- 1...Sc3
- 2.Sxc3#
- 1...Sh3
- 2.Rxe2#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Rc3#
- 1...Sf4
- 2.Qxg1#
- 1...c3!
- 1...Sxf3
- 1.Qxg1+?
- 1...Kxf3
- 2.Qg3#
- 1...Kf4
- 2.Rf7#
- 1...Sxg1!
- 1...Kxf3
- 1.c6?
- 1...Sxf3
- 2.Rxe2#
- 1...Sxc1
- 2.Sf2#
- 2.Sc5#
- 1...Sc3
- 2.Sxc3#
- 1...Sh3
- 2.Rxe2#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Rc3#
- 1...Sf4
- 2.Qxg1#
- 1...c3!
- 1...Sxf3
- 1.g6?
- 1...Sxf3
- 2.Rxe2#
- 1...Sxc1
- 2.Sf2#
- 1...Sc3
- 2.Sxc3#
- 1...Sh3
- 2.Rxe2#
- 1...Sg3
- 2.Sxg3#
- 2.Qg5#
- 1...Sd4
- 2.Rc3#
- 2.Qg5#
- 1...Sf4
- 2.Qxg1#
- 1...c3!
- 1...Sxf3
- 1.Ka5?
- Keys
- 1.Qh4!
- threat
- 2.Sd2#
- 1...Kxf3
- 2.Qg3#
- 1...Sxf3
- 2.Rxe2#
- 1...Sxc1
- 2.Sf2#
- 1...Sc3
- 2.Sxc3#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Rc3#
- 1...Sf4
- 2.Qf2#
- threat
- 1.Qh4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- S(a);N_GUARD,XP(E)::R1(D),XS(c)
- S(a);N_GUARD::R1(D),XS(c)
- S(c);XS(B)::R(K)+S(F)
- S(c);::R(K)+S(F),XS(c)
- S(c);N_GUARD,SBLOCK::R(D)
- S(c);N_GUARD,SBLOCK::QAB(G),XS(a)
- Tries
- Try
- K(J);S_FLIGHT
- Vars
- S(a);N_GUARD,XP(E)::R1(D),XS(c)
- S(c);XS(B)::R(K)+S(F)
- S(c);::R(K)+S(F),XS(c)
- S(a);N_GUARD::R1(D),XS(c)
- S(c);N_GUARD,SBLOCK::R(D)
- S(c);N_GUARD,SBLOCK::QAB(G),XS(a)
- Refutation
- P(e);
- Try
- K(J);P-FLIGHT
- Vars
- S(a);N_GUARD,XP(E)::R1(D),XS(c)
- S(c);XS(B)::R(K)+S(F)
- S(c);::R(K)+S(F),XS(c)
- S(a);N_GUARD::R1(D),XS(c)
- S(c);N_GUARD,SBLOCK::R(D)
- S(c);N_GUARD,SBLOCK::QAB(G),XS(a)
- Refutation
- P(e);
- Try
- K(J);S_FLIGHT
- Vars
- S(a);N_GUARD,XP(E)::R1(D),XS(c)
- S(c);XS(B)::R(K)+S(F)
- S(c);::R(K)+S(F),XS(c)
- S(a);N_GUARD::R1(D),XS(c)
- S(c);N_GUARD,SBLOCK::R(D)
- S(c);N_GUARD,SBLOCK::QAB(G),XS(a)
- Refutation
- P(e);
- Try
- K(J);P-FLIGHT
- Vars
- S(a);N_GUARD,XP(E)::R1(D),XS(c)
- S(c);XS(B)::R(K)+S(F)
- S(c);::R(K)+S(F),XS(c)
- S(a);N_GUARD::R1(D),XS(c)
- S(c);N_GUARD,SBLOCK::R(D)
- S(c);N_GUARD,SBLOCK::QAB(G),XS(a)
- Refutation
- P(e);
- Try
- K(J);S_FLIGHT
- Vars
- S(a);N_GUARD,XP(E)::R1(D),XS(c)
- S(c);XS(B)::R(K)+S(F)
- S(c);::R(K)+S(F),XS(c)
- S(a);N_GUARD::R1(D),XS(c)
- S(c);N_GUARD,SBLOCK::R(D)
- S(c);N_GUARD,SBLOCK::QAB(G),XS(a)
- Refutation
- P(e);
- Try
- S(B);XS(c)
- Threat
- R(D)
- Vars
- P(e);::R(D),XP(e)
- Refutation
- S(a);XS(B)
- Try
- B(A);CHECK
- Vars
- S(c);SBLOCK,XB(A)::R(D)
- Refutation
- K(d);S_FLIGHT,XB(A)
- Try
- R(D);
- Vars
- S(a);N_GUARD,XP(E)::R1(D),XS(c)
- S(c);N_GUARD,XS(B)::B(A)
- S(a);N_GUARD::R1(D),XS(c)
- S(c);N_GUARD::B(A)
- S(c);N_GUARD::B(A),XS(c)
- P(e);N_GUARD::R1(D)
- Refutation
- S(c);
- Try
- R(D);CHECK
- Refutation
- S(c);XR(D)
- Try
- R(K);
- Vars
- S(a);N_GUARD,XP(E)::R1(D),XS(c)
- S(c);XS(B)::R(K)+S(F)
- S(c);::R(K)+S(F),XS(c)
- S(a);N_GUARD::R1(D),XS(c)
- Refutation
- P(e);
- Try
- R(K);
- Vars
- S(a);N_GUARD,XP(E)::R1(D),XS(c)
- S(c);XS(B)::R(K)+S(F)
- S(c);::R(K)+S(F),XS(c)
- S(a);N_GUARD::R1(D),XS(c)
- S(c);N_GUARD,SBLOCK::R(D)
- S(c);N_GUARD,SBLOCK::QAB(G),XS(a)
- Refutation
- P(e);
- Try
- R(K);
- Vars
- S(a);N_GUARD,XP(E)::R1(D),XS(c)
- S(a);N_GUARD::R1(D),XS(c)
- S(c);N_GUARD::R(D),XS(c)
- P(e);N_GUARD::R1(K)
- Refutation
- S(c);XS(B)
- Try
- R(K);
- Vars
- S(a);N_GUARD,XP(E)::R1(D),XS(c)
- S(c);XS(B)::R(K)+S(F)
- S(c);::R(K)+S(F),XS(c)
- S(a);N_GUARD::R1(D),XS(c)
- S(c);N_GUARD,SBLOCK::R(D)
- S(c);N_GUARD,SBLOCK::QAB(G),XS(a)
- Refutation
- P(e);
- Try
- Q(G);CHECK,XS(a)
- Vars
- K(d);OGATEB,P-FLIGHT,P_SPINS(c),XP(E)::QAR1(G)
- K(d);S_FLIGHT::R(K)
- Refutation
- S(c);XQ(G)
- Try
- P(H);
- Vars
- S(a);N_GUARD,XP(E)::R1(D),XS(c)
- S(c);::R(K)+S(F),XS(c)
- S(a);N_GUARD::R1(D),XS(c)
- S(c);N_GUARD,SBLOCK::R(D)
- S(c);N_GUARD,SBLOCK::QAB(G),XS(a)
- Refutation
- P(e);
- Try
- P(I);
- Vars
- S(a);N_GUARD,XP(E)::R1(D),XS(c)
- S(c);XS(B)::R(K)+S(F)
- S(c);::R(K)+S(F),XS(c)
- S(a);N_GUARD::R1(D),XS(c)
- S(c);N_GUARD,SBLOCK::QAB(G),XS(a)
- Refutation
- P(e);
- Try
- Actual
- Q(G);
- Threat
- R(K)+S(F)
- Vars
- K(d);OGATEB,P-FLIGHT,P_SPINS(c),XP(E)::QAR1(G)
- S(a);N_GUARD,SBLOCK,XP(E)::R1(D),XS(c)
- S(c);XS(B)::R(K)+S(F)
- S(c);::R(K)+S(F),XS(c)
- S(c);N_GUARD,SBLOCK::R(D)
- S(c);SBLOCK::QAB1(G)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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