MESON Chess Problem Database
Problem Display
PID: 55869 (5bQ1/4pNp1/2K1p1kn/6P1/6P1/3R4/2R5/1B6 w - - 0 1)
Mansfield, Comins
diagrammes, 1977
#2
8 + 6
| 4054 | Complete Mansfield/III | 1999 |
SOLUTION
- SOUND
- Tries
- 1.Rc1?
- 1...Sxg4
- 2.Rh3#
- 1...Sxf7
- 2.Rd5#
- 1...Sxg8
- 2.Rf3#
- 1...e5
- 2.Rd6#
- 1...Sf5!
- 1...Sxg4
- 1.Ra2?
- 1...Sxg4
- 2.Rh3#
- 1...Sxf7
- 2.Rd5#
- 1...Sxg8
- 2.Rf3#
- 1...e5
- 2.Rd6#
- 1...Sf5!
- 1...Sxg4
- 1.Rb2?
- 1...Sxg4
- 2.Rh3#
- 1...Sxf7
- 2.Rd5#
- 1...Sxg8
- 2.Rf3#
- 1...e5
- 2.Rd6#
- 1...Sf5!
- 1...Sxg4
- 1.Rcd2?
- 1...Sxg4
- 2.Rh3#
- 1...Sxf7
- 2.Rd5#
- 1...Sxg8
- 2.Rf3#
- 1...e5
- 2.Rd6#
- 1...Sf5!
- 1...Sxg4
- 1.Rf2?
- 1...Sxg4
- 2.Rh3#
- 1...Sxf7
- 2.Rd5#
- 1...Sxg8
- 2.Rd1#
- 2.Rdd2#
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Re3#
- 2.Rdf3#
- 2.Rg3#
- 2.Rh3#
- 2.Rd4#
- 2.Rd5#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...e5
- 2.Rd6#
- 1...Sf5!
- 1...Sxg4
- 1.Rg2?
- 1...Sxg4
- 2.Rh3#
- 1...Sxf7
- 2.Rd5#
- 1...Sxg8
- 2.Rf3#
- 1...e5
- 2.Rd6#
- 1...Sf5!
- 1...Sxg4
- 1.Rh2?
- threat
- 2.Rxh6#
- 1...Sxg4
- 2.Rd1#
- 2.Rdd2#
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Re3#
- 2.Rf3#
- 2.Rg3#
- 2.Rdh3#
- 2.Rd4#
- 2.Rd5#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Sxf7
- 2.Rd5#
- 1...Sxg8
- 2.Rf3#
- 1...Sf5!
- threat
- 1.Rcc3?
- 1...Sxg4
- 2.Rh3#
- 1...Sxf7
- 2.Rd5#
- 1...Sxg8
- 2.Rf3#
- 1...e5
- 2.Rd6#
- 1...Sf5!
- 1...Sxg4
- 1.Rc4?
- 1...Sxg4
- 2.Rh3#
- 1...Sxf7
- 2.Rd5#
- 1...Sxg8
- 2.Rf3#
- 1...e5
- 2.Rd6#
- 1...Sf5!
- 1...Sxg4
- 1.Rc5?
- threat
- 2.Sh8#
- 1...Sxg4
- 2.Rh3#
- 1...Sxf7
- 2.Rd1#
- 2.Rd2#
- 2.Ra3#
- 2.Rb3#
- 2.Rdc3#
- 2.Re3#
- 2.Rf3#
- 2.Rg3#
- 2.Rh3#
- 2.Rd4#
- 2.Rdd5#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Sxg8
- 2.Rf3#
- 1...e5
- 2.Rd6#
- 1...Sf5!
- threat
- 1.Re3?
- threat
- 2.Rxe6#
- 1...Sxg4
- 2.Rh2#
- 1...Sxf7
- 2.Rc5#
- 1...Sxg8
- 2.Rf2#
- 1...e5!
- threat
- 1.Rh3?
- threat
- 2.Rxh6#
- 1...Sxg4
- 2.Rc1#
- 2.Ra2#
- 2.Rb2#
- 2.Rd2#
- 2.Re2#
- 2.Rf2#
- 2.Rg2#
- 2.Rch2#
- 2.Rcc3#
- 2.Rc4#
- 2.Rc5#
- 1...Sxf7
- 2.Rc5#
- 1...Sxg8
- 2.Rf2#
- 1...Sf5!
- threat
- 1.Rd6?
- threat
- 2.Rxe6#
- 1...Sxg4
- 2.Rh2#
- 1...Sxf7
- 2.Rc5#
- 1...Sxg8
- 2.Rf2#
- 1...exd6!
- threat
- 1.Rc1?
- Keys
- 1.Re2!
- threat
- 2.Rxe6#
- 1...Sxg4
- 2.Rh3#
- 1...Sxf7
- 2.Rd5#
- 1...Sxg8
- 2.Rf3#
- 1...e5
- 2.Rd6#
- threat
- 1.Re2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- Tries
- Try
- R(B);
- Vars
- S(c);N_GUARD,XP(D)::B(A)+R(C)
- S(c);N_GUARD,XS(G)::B(A)+R(C)
- S(c);N_GUARD,N_SPINP(e),XQ(H)::B(A)+R(C)
- P(a);::B(A)+R(C),DCHECK
- Refutation
- S(c);
- Try
- R(B);
- Vars
- S(c);N_GUARD,XP(D)::B(A)+R(C)
- S(c);N_GUARD,XS(G)::B(A)+R(C)
- S(c);N_GUARD,N_SPINP(e),XQ(H)::B(A)+R(C)
- P(a);::B(A)+R(C),DCHECK
- Refutation
- S(c);
- Try
- R(B);
- Vars
- S(c);N_GUARD,XP(D)::B(A)+R(C)
- S(c);N_GUARD,XS(G)::B(A)+R(C)
- S(c);N_GUARD,N_SPINP(e),XQ(H)::B(A)+R(C)
- P(a);::B(A)+R(C),DCHECK
- Refutation
- S(c);
- Try
- R(B);
- Vars
- S(c);N_GUARD,XP(D)::B(A)+R(C)
- S(c);N_GUARD,XS(G)::B(A)+R(C)
- S(c);N_GUARD,N_SPINP(e),XQ(H)::B(A)+R(C)
- P(a);::B(A)+R(C),DCHECK
- Refutation
- S(c);
- Try
- R(B);
- Vars
- S(c);N_GUARD,XP(D)::B(A)+R(C)
- S(c);N_GUARD,XS(G)::B(A)+R(C)
- P(a);::B(A)+R(C),DCHECK
- Refutation
- S(c);
- Try
- R(B);
- Vars
- S(c);N_GUARD,XP(D)::B(A)+R(C)
- S(c);N_GUARD,XS(G)::B(A)+R(C)
- S(c);N_GUARD,N_SPINP(e),XQ(H)::B(A)+R(C)
- P(a);::B(A)+R(C),DCHECK
- Refutation
- S(c);
- Try
- R(B);
- Threat
- R1(B),XS(c)
- Vars
- S(c);N_GUARD,XS(G)::B(A)+R(C)
- S(c);N_GUARD,N_SPINP(e),XQ(H)::B(A)+R(C)
- Refutation
- S(c);
- Try
- R(B);
- Vars
- S(c);N_GUARD,XP(D)::B(A)+R(C)
- S(c);N_GUARD,XS(G)::B(A)+R(C)
- S(c);N_GUARD,N_SPINP(e),XQ(H)::B(A)+R(C)
- P(a);::B(A)+R(C),DCHECK
- Refutation
- S(c);
- Try
- R(B);
- Vars
- S(c);N_GUARD,XP(D)::B(A)+R(C)
- S(c);N_GUARD,XS(G)::B(A)+R(C)
- S(c);N_GUARD,N_SPINP(e),XQ(H)::B(A)+R(C)
- P(a);::B(A)+R(C),DCHECK
- Refutation
- S(c);
- Try
- R(B);
- Threat
- S(G)
- Vars
- S(c);N_GUARD,XP(D)::B(A)+R(C)
- S(c);N_GUARD,N_SPINP(e),XQ(H)::B(A)+R(C)
- P(a);::B(A)+R(C),DCHECK
- Refutation
- S(c);
- Try
- R(C);
- Threat
- R(C),XP(a)
- Vars
- S(c);N_GUARD,XP(D)::B(A)+R(B)
- S(c);N_GUARD,XS(G)::B(A)+R(B)
- S(c);N_GUARD,N_SPINP(e),XQ(H)::B(A)+R(B)
- Refutation
- P(a);
- Try
- R(C);
- Threat
- R1(C),XS(c)
- Vars
- S(c);N_GUARD,XS(G)::B(A)+R(B)
- S(c);N_GUARD,N_SPINP(e),XQ(H)::B(A)+R(B)
- Refutation
- S(c);
- Try
- R(C);N_PINP(e),P_PINP(a)
- Threat
- R(C),XP(a)
- Vars
- S(c);N_GUARD,XP(D)::B(A)+R(B)
- S(c);N_GUARD,XS(G)::B(A)+R(B)
- S(c);N_GUARD,XQ(H)::B(A)+R(B)
- Refutation
- P(d);N_SPINP(a),P_SPINP(e),XR(C)
- Try
- Actual
- R(B);
- Threat
- R(B),XP(a)
- Vars
- S(c);N_GUARD,XP(D)::B(A)+R(C)
- S(c);N_GUARD,XS(G)::B(A)+R(C)
- S(c);N_GUARD,N_SPINP(e),XQ(H)::B(A)+R(C)
- P(a);::B(A)+R(C),DCHECK
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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