MESON Chess Problem Database

Problem Display
PID: 108240 (3r4/6p1/3P2p1/Rn2k1Nn/2pRN1PB/6p1/B5P1/Q3K3 w - - 0 1)

Cooper, EJ

Wilkes-Barre Record, 1889

3r4/6p1/3P2p1/Rn2k1Nn/2pRN1PB/6p1/B5P1/Q3K3

#2

11 + 8

564 Manchester Evening News 1922
6490 yacpdb 2009
15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sf6
      • 2.Bxg3#
  • Tries
    • 1.Sc5?
      • threat
        • 2.Sf3#
        • 2.Sf7#
      • 1...Kf6
        • 2.Rf4#
      • 1...Sxd6
        • 2.Sd7#
        • 2.Sf3#
      • 1...Sc3
        • 2.Sf3#
      • 1...c3
        • 2.Sf3#
      • 1...Rd7
        • 2.Sxd7#
        • 2.Sf3#
      • 1...Rf8
        • 2.Sd7#
      • 1...Sxd4!
    • 1.Bxg3+?
      • 1...Sf4
        • 2.Rxb5#
      • 1...Sxg3!
    • 1.Rxc4+?
      • 1...Kd5
        • 2.Rc1#
        • 2.Rc2#
        • 2.Rc5#
        • 2.Rc7#
        • 2.Rc8#
        • 2.Rxb5#
        • 2.Qd4#
      • 1...Kf4!
  • Keys
    • 1.Sf6!
      • 1...Kxf6
        • 2.Rf4#
      • 1...Rxd6
        • 2.Re4#
      • 1...Sxf6
        • 2.Bxg3#
      • 1...gxf6
        • 2.Rxb5#
      • 1...c3
        • 2.Sf3#
      • 1...Rd7
        • 2.Sxd7#
      • 1...Ra8
        • 2.Sd7#
      • 1...Rb8
        • 2.Sd7#
      • 1...Rc8
        • 2.Sd7#
      • 1...Re8
        • 2.Sd7#
      • 1...Rf8
        • 2.Sd7#
      • 1...Rg8
        • 2.Sd7#
      • 1...Rh8
        • 2.Sd7#
      • 1...Sf4
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
    • S(e);N_GUARD::B(H),XP(a)
  • Tries
    • Try
      • S(F);N_PINS(c)
      • Threat
        • DUALS(2)
      • Vars
        • K(d);S_FLIGHT::QAB(A)+R(E),DCHECK
        • S(c);::S(J)
        • P(b);::S(J)
        • R(h);N_GUARD::S(F)
      • Refutation
        • S(c);P_SPINS(c),XR(E)
    • Try
      • B(H);CHECK,XP(a)
      • Vars
        • S(e);N_SPINS(c),P_SPINS(e)::R(I),XS(c)
      • Refutation
        • S(e);XB(H)
    • Try
      • R(E);CHECK,XP(b)
      • Refutation
        • K(d);N_SPINS(c),S_FLIGHT
  • Actual
    • S(F);
    • Vars
      • K(d);N_SPINS(c),S_FLIGHT,XS(F)::QAB(A)+R(E),DCHECK
      • R(h);SBLOCK,XP(K)::QAB(A)+R(E),DCHECK
      • S(e);N_GUARD,SBLOCK,XS(F)::B(H),XP(a)
      • P(g);SBLOCK,XS(F)::R(I),XS(c)
      • P(b);::S(J)
      • R(h);N_GUARD::S(F),XR(h)
      • R(h);N_GUARD::S(F)
      • S(e);SBLOCK::QAB(A)+R(E),DCHECK
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