MESON Chess Problem Database

Problem Display
PID: 246542 (4Rn1B/6Np/2K1Ppp1/2p1k1PP/3pPp2/2PP2N1/4P2Q/5R1B w - - 0 1)

Segers, Marcel

The Problemist, 1989

4Rn1B/6Np/2K1Ppp1/2p1k1PP/3pPp2/2PP2N1/4P2Q/5R1B

#2

15 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sxe6
      • 2.Rxe6#
    • 1...Sd7
      • 2.exd7#
    • 1...fxg3
      • 2.Qxg3#
    • 1...f3
      • 2.S3f5#
    • 1...fxg5
      • 2.S7f5#
    • 1...f5
      • 2.S7xf5#
  • Tries
    • 1.S7f5?
      • threat
        • 2.Bxf6#
      • 1...Sd7
        • 2.exd7#
      • 1...f3!
    • 1.Qf2?
      • threat
        • 2.Qxf4#
      • 1...dxc3
        • 2.Qxc5#
      • 1...fxg3
        • 2.Qxg3#
        • 2.Qf4#
        • 2.Qxf6#
      • 1...fxg5
        • 2.S7f5#
      • 1...f3!
  • Keys
    • 1.Kxc5!
      • threat
        • 2.cxd4#
      • 1...Sxe6+
        • 2.Rxe6#
      • 1...Sd7+
        • 2.exd7#
      • 1...dxc3
        • 2.d4#
      • 1...fxg5
        • 2.S7f5#
      • 1...f3
        • 2.S3f5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • S(h);OGATE,P_SPINS(h),XP(L)::R1(N),XS(h)
    • S(h);OGATE::R(N)+P(L),XS(h)
    • P(b);OGATE,P_SPINP(b),XS(G)::QAB(D),XP(b)
    • P(b);::QAB(D)+S(G)
    • P(e);XP(I)::B(O)+S(M)
    • P(e);::B(O)+S(M),XP(e)
  • Tries
    • Try
      • S(M);P_PINP(e)
      • Threat
        • B(O),XP(e)
      • Vars
        • S(h);OGATE::R(N)+P(L),XS(h)
      • Refutation
        • P(b);
    • Try
      • Q(D);
      • Threat
        • QAB1(D),XP(b)
      • Vars
        • P(a);OGATE,XP(E)::QAR2(D),XP(c)
        • P(e);XP(I)::B(O)+S(M)
      • Refutation
        • P(b);
  • Actual
    • K(K);P-FLIGHT,XP(c)
    • Threat
      • P(E),XP(a)
    • Vars
      • S(h);CHECK,OGATE,P_SPINS(h),XP(L)::R1(N),XS(h)
      • S(h);CHECK,OGATE::R(N)+P(L),XS(h)
      • P(a);OGATE,XP(E)::P(F)
      • P(e);XP(I)::B(O)+S(M)
      • P(b);::QAB(D)+S(G)
HTML5 logo

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).