MESON Chess Problem Database

Problem Display
PID: 16127 (8/8/8/8/2p3p1/2KPQPpN/2P3Pp/R3Nk1q w - - 0 1)

Bogdanov, Evgeny Mikhailovich

Schach, 2000

8/8/8/8/2p3p1/2KPQPpN/2P3Pp/R3Nk1q

#2

9 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...cxd3
      • 2.Qxd3#
    • 1...gxf3
      • 2.Qxf3#
  • Tries
    • 1.dxc4?
      • threat
        • 2.Qd3#
      • 1...Qxg2
        • 2.Sd3#
      • 1...gxh3!
    • 1.fxg4?
      • threat
        • 2.Qf3#
      • 1...Qxg2
        • 2.Sf3#
      • 1...Qg1!
  • Keys
    • 1.Sf4!
      • 1...Qxg2
        • 2.Sexg2#
      • 1...cxd3
        • 2.Sexd3#
      • 1...gxf3
        • 2.Sxf3#
      • 1...Qg1
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(e);OGATE,XP(F)::QAB(G),XP(e)
    • P(f);OGATE,XP(H)::QAR2(G),XP(f)
  • Tries
    • Try
      • P(F);XP(e)
      • Threat
        • QAB(G)
      • Vars
        • Q(b);SBLOCK,XP(D)::R(A)+S(B)
      • Refutation
        • P(f);XS(I)
    • Try
      • P(H);XP(f)
      • Threat
        • QAR2(G)
      • Vars
        • Q(b);SBLOCK,XP(D)::R(A)+S(B)
      • Refutation
        • Q(b);
  • Actual
    • S(I);
    • Vars
      • Q(b);XP(D)::R(A)+S(B),XQ(b)
      • P(e);XP(F)::R(A)+S(B),XP(e)
      • P(f);XP(H)::R(A)+S(B),XP(f)
      • Q(b);SBLOCK::QAB1(G)
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