MESON Chess Problem Database

Problem Display
PID: 274541 (4NK2/B1R2P2/8/3k2NR/3P4/nprr2p1/2Qb4/7b w - - 0 1)

Reilly, William Henry

The Problemist, 1933

4NK2/B1R2P2/8/3k2NR/3P4/nprr2p1/2Qb4/7b

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Qxc5#
    • 1...Rc6
      • 2.Qxc6#
    • 1...Rf3
      • 2.Qe4#
    • 1...Rxd4
      • 2.Qf5#
  • Tries
    • 1.Rc5+?
      • 1...Rxc5
        • 2.Qxc5#
      • 1...Kxd4!
  • Keys
    • 1.Ke7!
      • threat
        • 2.Sf6#
      • 1...Rxc7+
        • 2.Sxc7#
      • 1...Re3+
        • 2.Se4#
      • 1...Rxd4
        • 2.Qf5#
      • 1...Rc5
        • 2.Qxc5#
      • 1...Rc6
        • 2.Qxc6#
      • 1...Rf3
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(e);OGATE::QAR1(A),XR(e)
    • R(e);OGATE::QAB1(A),XR(e)
    • R(f);OGATE,P_PINP(G)::QAB1(A)
    • R(f);OGATE,XP(B)::QAR2(A)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • R(e);OGATE,XR(F)::QAR1(A),XR(e)
      • Refutation
        • K(h);P-FLIGHT,XP(B)
  • Actual
    • K(I);S_FLIGHT
    • Threat
      • S(H)
    • Vars
      • R(e);CHECK,XR(F)::S(H),XR(e)
      • R(f);CHECK,S_CUTB(b)::R(D)+S(C)
      • R(f);OGATE,XP(B)::QAR2(A)
      • R(e);OGATE::QAR1(A),XR(e)
      • R(e);OGATE::QAB1(A),XR(e)
      • R(f);OGATE::QAB1(A)
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