MESON Chess Problem Database

Problem Display
PID: 102972 (6Q1/1p5B/1Pp1Np2/n1P4R/p1kN4/B4P2/1P6/3K4 w - - 0 1)

Kofman, Rafael Moiseevich

64 Shakhmatnoe obozrenie, 1968

6Q1/1p5B/1Pp1Np2/n1P4R/p1kN4/B4P2/1P6/3K4

#2

11 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sc2?
      • threat
        • 2.Sed4#
        • 2.Sc7#
      • 1...Kb3
        • 2.Sed4#
      • 1...Kb5
        • 2.Sc7#
      • 1...f5!
    • 1.Se2?
      • threat
        • 2.S6d4#
        • 2.Sc7#
      • 1...Kb3
        • 2.S6d4#
      • 1...Kb5
        • 2.Sc7#
      • 1...f5!
    • 1.Qa8?
      • 1...Sb3
        • 2.Qxa4#
      • 1...f5!
  • Keys
    • 1.Sf5!
      • 1...Kb3
        • 2.Sed4#
      • 1...Kd3
        • 2.Sf4#
      • 1...Kb5
        • 2.Sc7#
      • 1...Kd5
        • 2.Se3#
      • 1...Sb3
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);S_FLIGHT::QAB(K)+S(I),DCHECK
        • K(b);S_FLIGHT::S(I)
      • Refutation
        • P(e);
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);S_FLIGHT::QAB(K)+S(I),DCHECK
        • K(b);S_FLIGHT::S(I)
      • Refutation
        • P(e);
    • Try
      • Q(K);
      • Vars
        • S(c);OGATE::QAR2(K),XP(a)
      • Refutation
        • P(e);
  • Actual
    • S(E);
    • Vars
      • K(b);S_FLIGHT::QAB(K)+S(I),DCHECK
      • K(b);S_FLIGHT::S(I)
      • K(b);S_FLIGHT::R(G)+S(E),DCHECK
      • S(c);SBLOCK::S(E)
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