MESON Chess Problem Database

Problem Display
PID: 173253 (KNk5/1pB3Pb/8/1p2R3/6R1/7B/2NP1r1b/2Q1r3 w - - 0 1)

Lipton, Michael

The Problemist, 2017

KNk5/1pB3Pb/8/1p2R3/6R1/7B/2NP1r1b/2Q1r3

#2

10 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Ba5?
      • threat
        • 2.Rc4#
      • 1...Re4
        • 2.Sd4#
      • 1...Rf4
        • 2.Rc5#
      • 1...Rf5
        • 2.Sxe1#
      • 1...Bf4
        • 2.Rg6#
      • 1...Be4
        • 2.Re8#
      • 1...Bf5
        • 2.g8Q#
        • 2.g8R#
      • 1...b6!
    • 1.Rc4+?
      • 1...Bf5
        • 2.g8Q#
        • 2.g8R#
      • 1...Rf5!
  • Keys
    • 1.Bb6!
      • threat
        • 2.Rc4#
      • 1...Re4
        • 2.Sd4#
      • 1...Rf4
        • 2.Rc5#
      • 1...Rf5
        • 2.Sxe1#
      • 1...Bf4
        • 2.Rg6#
      • 1...Be4
        • 2.Re8#
      • 1...Bf5
        • 2.g8Q#
        • 2.g8R#

This is a version of 173252

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(G);
      • Threat
        • B(D)+R(E),DCHECK
      • Vars
        • R(a);N_GUARD,S_CUTB(f)::QAR(A)+S(B)
        • R(b);S_CUTB(c)::R(F)
        • R(b);S_CUTB(f)::QAR(A)+S(B),XR(a)
        • B(c);S_CUTR(b)::B(D)+R(E)
        • B(f);S_CUTR(a)::R(F)
        • B(f);N_GUARD,S_CUTR(b)::P=Q
      • Refutation
        • P(e);
    • Try
      • R(E);CHECK
      • Vars
        • B(f);P_SPINB(f)::P=Q
      • Refutation
        • R(b);P_SPINR(b)
  • Actual
    • B(G);
    • Threat
      • B(D)+R(E),DCHECK
    • Vars
      • R(a);N_GUARD,S_CUTB(f)::QAR(A)+S(B)
      • R(b);S_CUTB(c)::R(F)
      • R(b);S_CUTB(f)::QAR(A)+S(B),XR(a)
      • B(c);S_CUTR(b)::B(D)+R(E)
      • B(f);S_CUTR(a)::R(F)
      • B(f);N_GUARD,S_CUTR(b)::P=Q
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