MESON Chess Problem Database

Problem Display
PID: 162487 (1Q6/1q1rRN1B/8/3np2p/5k2/4p2K/2r3R1/bbB3N1 w - - 0 1)

Wirajaya, Daniel

Comm., The Problemist, 2016

1Q6/1q1rRN1B/8/3np2p/5k2/4p2K/2r3R1/bbB3N1

#2

8 + 10

56 The Problemist 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rb2
      • 2.Qxe5#
    • 1...Rf2
      • 2.Rxf2#
    • 1...Rc3
      • 2.Rf2#
      • 2.Qxe5#
    • 1...Rc4
      • 2.Rf2#
    • 1...Rc5
      • 2.Rf2#
    • 1...Rc6
      • 2.Rf2#
    • 1...Rcc7
      • 2.Rf2#
    • 1...Rc8
      • 2.Rf2#
    • 1...Sc3
      • 2.Qxe5#
    • 1...h4
      • 2.Rg4#
  • Tries
    • 1.Se2+?
      • 1...Kf3
        • 2.Sg5#
      • 1...Rxe2!
    • 1.Sxe5?
      • threat
        • 2.Sd3#
      • 1...Bxe5
        • 2.Qxe5#
      • 1...Rcc7
        • 2.Se2#
      • 1...Sc7
        • 2.Qf8#
      • 1...Rxg2!
    • 1.Qg8?
      • threat
        • 2.Qg3#
        • 2.Qg5#
      • 1...h4
        • 2.Rg4#
        • 2.Qg4#
        • 2.Qg5#
      • 1...Rxg2!
  • Keys
    • 1.Rxe5!
      • threat
        • 2.Re4#
      • 1...Bxe5
        • 2.Qxe5#
      • 1...Rcc7
        • 2.Rf2#
      • 1...Sc7
        • 2.Bxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • R(c);S_CUTB(a)::QAB1(H),XP(g)
    • R(c);N_GUARD::R(C),XR(c)
    • R(c);N_GUARD::R(C)
    • S(f);S_CUTB(a)::QAB1(H),XP(g)
    • P(h);N_GUARD::R1(C)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(e);N_SPINP(d),P-FLIGHT::S(F)
      • Refutation
        • R(c);XS(B)
    • Try
      • S(F);XP(g)
      • Threat
        • QAB(H)+S(F),DCHECK
      • Vars
        • B(a);OGATE,P_SPINB(a),XS(F)::QAB1(H),XB(a)
        • R(c);N_GUARD::S(B)
        • S(f);N_GUARD::QAR(H)
      • Refutation
        • R(c);XR(C)
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Refutation
        • R(c);XR(C)
  • Actual
    • R(E);XP(g)
    • Threat
      • QAB(H)+R(E),DCHECK
    • Vars
      • B(a);OGATE,P_SPINB(a),XR(E)::QAB1(H),XB(a)
      • R(c);N_GUARD::R(C)
      • S(f);N_GUARD::B(A),XP(d)
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