MESON Chess Problem Database

Problem Display
PID: 266481 (QK6/7R/6B1/5p2/4pP1p/4NPk1/6N1/6B1 w - - 0 1)

Bednar, Milan

Mat, 1980

QK6/7R/6B1/5p2/4pP1p/4NPk1/6N1/6B1

#2

9 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Sxh4?
      • 1...Kh3
        • 2.Shxf5#
      • 1...exf3
        • 2.Qxf3#
      • 1...Kxf4!
    • 1.Bxf5?
      • 1...exf3
        • 2.Rg7#
      • 1...h3
        • 2.Rxh3#
      • 1...Kxf3!
    • 1.Bh5?
      • 1...exf3
        • 2.Qxf3#
      • 1...h3
        • 2.Rg7#
      • 1...Kh3!
  • Keys
    • 1.Rg7!
      • 1...Kxf3
        • 2.Bh5#
      • 1...Kh3
        • 2.Bxf5#
      • 1...exf3
        • 2.Bxf5#
      • 1...h3
        • 2.Bh5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);XP(c)
      • Vars
        • K(a);N_GUARD,P-FLIGHT::R(G)+S(B),XP(d)
        • P(b);OGATE,XP(D)::QAR1(H),XP(b)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • B(F);XP(d)
      • Vars
        • P(b);XP(D)::R(G)
        • P(c);OGATE::R1(G),XP(c)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b),XP(D)
    • Try
      • B(F);
      • Vars
        • P(b);OGATE,XP(D)::QAR1(H),XP(b)
        • P(c);SBLOCK::R(G)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • R(G);
    • Vars
      • K(a);N_GUARD,P-FLIGHT,P_SPINP(b),XP(D)::B(F)
      • K(a);N_GUARD,P-FLIGHT::B(F),XP(d)
      • P(b);XP(D)::R(G)+B(F),XP(d)
      • P(c);SBLOCK::R(G)+B(F)
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