MESON Chess Problem Database

Problem Display
PID: 81114 (7n/1p5b/Q6p/1PppP2n/1p2kBPp/7N/4P1P1/1K1R1N2 w - - 0 1)

Janevski, Zivko

Comm., The Problemist, 2008

7n/1p5b/Q6p/1PppP2n/1p2kBPp/7N/4P1P1/1K1R1N2

#2

11 + 10

56 The Problemist 2009

SOLUTION

  • SOUND
  • Sets
    • 1...d4
      • 2.Qxb7#
  • Tries
    • 1.Rd3?
      • threat
        • 2.Sd2#
      • 1...d4
        • 2.Qxb7#
      • 1...Sxf4!
    • 1.Rd4+?
      • 1...cxd4
        • 2.Sd2#
      • 1...Kxd4+!
    • 1.Qa1?
      • threat
        • 2.Sd2#
      • 1...Sxf4
        • 2.Sf2#
      • 1...d4!
    • 1.Qxh6?
      • threat
        • 2.Sf2#
      • 1...Sxf4
        • 2.Qxf4#
      • 1...d4!
    • 1.e3?
      • threat
        • 2.Sf2#
      • 1...d4
        • 2.Qxb7#
      • 1...Sxf4!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Qxd5#
      • 1...Sxf4
        • 2.Sf2#
      • 1...Bg8
        • 2.Qf5#
      • 1...Sf6
        • 2.exf6#
      • 1...d4
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(e);OGATEB::QAB(K),XP(h)
  • Tries
    • Try
      • R(B);
      • Threat
        • S(C)
      • Vars
        • P(e);OGATEB::QAB(K),XP(h)
      • Refutation
        • S(f);XB(G)
    • Try
      • R(B);CHECK
      • Vars
        • P(d);SBLOCK,XR(B)::S(C)
      • Refutation
        • K(b);CHECK,P-FLIGHT,XR(B)
    • Try
      • Q(K);
      • Threat
        • S(C)
      • Vars
        • S(f);SBLOCK,XB(G)::S(F)
      • Refutation
        • P(e);
    • Try
      • Q(K);XP(g)
      • Threat
        • S(F)
      • Vars
        • S(f);OGATE,XB(G)::QAR1(K),XS(f)
      • Refutation
        • P(e);
    • Try
      • P(D);
      • Threat
        • S(F)
      • Vars
        • P(e);OGATEB::QAB(K),XP(h)
      • Refutation
        • S(f);XB(G)
  • Actual
    • Q(K);
    • Threat
      • QAB1(K),XP(e)
    • Vars
      • S(f);SBLOCK,XB(G)::S(F)
      • B(i);N_GUARD::QAB1(K)
      • S(f);OGATE::QAR(K)+P(J),XS(f)
      • P(e);SBLOCK::S(C)
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