MESON Chess Problem Database

Problem Display
PID: 87755 (4B3/6np/3R3b/P4PkN/R5pp/7b/5N2/1QK5 w - - 0 1)

Robert, Philippe

The Problemist Supplement, 2000

4B3/6np/3R3b/P4PkN/R5pp/7b/5N2/1QK5

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bf1
      • 2.Rxg4#
    • 1...Bg2
      • 2.Rxg4#
    • 1...Sxf5
      • 2.Se4#
    • 1...g3
      • 2.Sxh3#
  • Tries
    • 1.Sxg7?
      • 1...Bf1
        • 2.Rxg4#
      • 1...Bg2
        • 2.Rxg4#
      • 1...g3
        • 2.Sxh3#
      • 1...Bxg7!
    • 1.Rd5?
      • threat
        • 2.Se4#
      • 1...Sxe8
        • 2.f6#
      • 1...Bg2
        • 2.Rxg4#
      • 1...g3
        • 2.Sxh3#
      • 1...Sxh5!
    • 1.Qb5?
      • threat
        • 2.Se4#
      • 1...Sxh5
        • 2.f6#
      • 1...Bg2
        • 2.Rxg4#
      • 1...g3
        • 2.Sxh3#
      • 1...Sxe8!
  • Keys
    • 1.f6!
      • 1...Sxh5
        • 2.Qb5#
      • 1...Sxe8
        • 2.Rd5#
      • 1...Bf1
        • 2.Rxg4#
      • 1...Bg2
        • 2.Rxg4#
      • 1...Sf5
        • 2.Se4#
      • 1...Se6
        • 2.Rd5#
      • 1...g3
        • 2.Sxh3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::R1(D),XP(b)
    • S(f);SBLOCK,XP(F)::S(C)
    • P(b);N_GUARD::S(C),XB(a)
  • Tries
    • Try
      • S(G);XS(f)
      • Vars
        • B(a);N_GUARD::R1(D),XP(b)
        • P(b);N_GUARD::S(C),XB(a)
      • Refutation
        • B(e);XS(G)
    • Try
      • R(H);
      • Threat
        • S(C)
      • Vars
        • S(f);N_GUARD,XB(I)::R(H)+P(F)
        • B(a);N_GUARD::R1(D),XP(b)
        • P(b);N_GUARD::S(C),XB(a)
      • Refutation
        • S(f);XS(G)
    • Try
      • Q(A);
      • Threat
        • S(C)
      • Vars
        • S(f);N_GUARD,XS(G)::QAR(A)+P(F)
        • B(a);N_GUARD::R1(D),XP(b)
        • P(b);N_GUARD::S(C),XB(a)
      • Refutation
        • S(f);XB(I)
  • Actual
    • P(F);
    • Vars
      • S(f);N_GUARD,XS(G)::QAR(A)
      • S(f);N_GUARD,XB(I)::R(H)
      • B(a);N_GUARD::R1(D),XP(b)
      • S(f);SBLOCK::S(C)
      • S(f);N_GUARD::R(H)
      • P(b);N_GUARD::S(C),XB(a)
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