MESON Chess Problem Database

Problem Display
PID: 159588 (2B5/K7/7b/3ppR2/4k3/2P1P3/4R1P1/2NNn2n w - - 0 1)

Tomson, Brian

The Problemist, 1974

2B5/K7/7b/3ppR2/4k3/2P1P3/4R1P1/2NNn2n

#2

9 + 6

15561 Fifty Chess Problems (Brian Tomson) 1983

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe3+
      • 2.Rxe3#
    • 1...Bf4
      • 2.exf4#
    • 1...Sf3
      • 2.gxf3#
    • 1...Sf2
      • 2.Sxf2#
    • 1...Sg3
      • 2.Sf2#
  • Tries
    • 1.Rff2?
      • threat
        • 2.Bf5#
      • 1...Bxe3+
        • 2.Rxe3#
      • 1...Sxf2
        • 2.Sxf2#
      • 1...d4
        • 2.Bb7#
      • 1...Bf4
        • 2.exf4#
      • 1...Sf3
        • 2.gxf3#
      • 1...Sg3!
    • 1.Rf6?
      • threat
        • 2.Bf5#
      • 1...Bxe3+
        • 2.Rxe3#
      • 1...d4
        • 2.Bb7#
      • 1...Sg3
        • 2.Sf2#
      • 1...Sxg2!
    • 1.Rf7?
      • threat
        • 2.Bf5#
      • 1...Bxe3+
        • 2.Rxe3#
      • 1...d4
        • 2.Bb7#
      • 1...Sg3
        • 2.Sf2#
      • 1...Sxg2!
  • Keys
    • 1.Rf1!
      • threat
        • 2.Bf5#
      • 1...Bxe3+
        • 2.Rxe3#
      • 1...d4
        • 2.Bb7#
      • 1...Bf4
        • 2.exf4#
      • 1...Sf3
        • 2.gxf3#
      • 1...Sf2
        • 2.Sxf2#
      • 1...Sg3
        • 2.Sf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(f);CHECK,OGATE,P_SPINB(f),XP(F)::R1(C),XB(f)
    • B(f);OGATE::R(C)+P(F),XB(f)
    • S(a);OGATE::P(D),XS(a)
    • S(b);N_GUARD::S(B),XS(b)
    • S(b);N_GUARD::S(B)
  • Tries
    • Try
      • R(G);
      • Threat
        • B(I)
      • Vars
        • B(f);CHECK,OGATE,P_SPINB(f),XP(F)::R1(C),XB(f)
        • S(b);XR(G)::S(B),XS(b)
        • P(d);OGATEB::B(I)
        • B(f);OGATE::R(C)+P(F),XB(f)
        • S(a);OGATE::P(D),XS(a)
      • Refutation
        • S(b);
    • Try
      • R(G);
      • Threat
        • B(I)
      • Vars
        • B(f);CHECK,OGATE,P_SPINB(f),XP(F)::R1(C),XB(f)
        • P(d);OGATEB::B(I)
        • S(b);N_GUARD::S(B)
      • Refutation
        • S(a);XP(D)
    • Try
      • R(G);
      • Threat
        • B(I)
      • Vars
        • B(f);CHECK,OGATE,P_SPINB(f),XP(F)::R1(C),XB(f)
        • P(d);OGATEB::B(I)
        • S(b);N_GUARD::S(B)
      • Refutation
        • S(a);XP(D)
  • Actual
    • R(G);
    • Threat
      • B(I)
    • Vars
      • B(f);CHECK,OGATE,P_SPINB(f),XP(F)::R1(C),XB(f)
      • P(d);OGATEB::B(I)
      • B(f);OGATE::R(C)+P(F),XB(f)
      • S(a);OGATE::P(D),XS(a)
      • S(b);N_GUARD::S(B),XS(b)
      • S(b);N_GUARD::S(B)
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