MESON Chess Problem Database

Problem Display
PID: 51372 (8/3R4/2p5/2Q2P2/N3k3/2P2r2/4N2K/7B w - - 0 1)

Hoole, JR

Manchester Guardian, 1958

8/3R4/2p5/2Q2P2/N3k3/2P2r2/4N2K/7B

#2

8 + 3

5454 Near Snap 2008

SOLUTION

  • SOUND
  • Tries
    • 1.Qd5+?
      • 1...Ke3
        • 2.Qxf3#
      • 1...cxd5!
    • 1.Qxc6+?
      • 1...Ke3
        • 2.Qxf3#
      • 1...Ke5
        • 2.Qe6#
      • 1...Kxf5!
  • Keys
    • 1.Kg2!
      • 1...Rf2+
        • 2.Kxf2#
      • 1...Rg3+
        • 2.Kxg3#
      • 1...Rxc3
        • 2.Saxc3#
      • 1...Rxf5
        • 2.Qd4#
      • 1...Rf1
        • 2.Kxf1#
      • 1...Rd3
        • 2.Re7#
      • 1...Re3
        • 2.Rd4#
      • 1...Rh3
        • 2.Kxh3#
      • 1...Rf4
        • 2.Sg3#

Anticipated by 21608(1920), 16386(1940)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);N_SPINR(a),OGATE,P-FLIGHT::QAR1(F),XR(a)
      • Refutation
        • P(c);XQ(F)
    • Try
      • Q(F);CHECK,XP(c)
      • Vars
        • K(b);N_SPINR(a),OGATE,P-FLIGHT::QAR1(F),XR(a)
        • K(b);N_SPINR(a),P-FLIGHT::QAR1(F)
      • Refutation
        • K(b);N_SPINR(a),S_FLIGHT,XP(G)
  • Actual
    • K(C);N_PINR(a),P-FLIGHT
    • Vars
      • R(a);CHECK::B(A)+K(C),XR(a)
      • R(a);XP(D)::S(E),XR(a)
      • R(a);SBLOCK,XP(G)::QAR1(F)
      • R(a);::B(A)+K(C),XR(a)
      • R(a);SBLOCK::R(H)
      • R(a);SBLOCK::R1(H)
      • R(a);N_GUARD,SBLOCK::S(B)
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