MESON Chess Problem Database

Problem Display
PID: 106805 (2Q5/4p3/4p3/1pN2P2/1pr2k2/1P2NrRb/5P1K/5R1B w - - 0 1)

Coe, WR

Illustrated London News, 1896

2Q5/4p3/4p3/1pN2P2/1pr2k2/1P2NrRb/5P1K/5R1B

#2

10 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Sd3#
    • 1...e5
      • 2.Sd5#
  • Tries
    • 1.Rg4+?
      • 1...Ke5
        • 2.Qxe6#
      • 1...Bxg4!
  • Keys
    • 1.Qh8!
      • 1...Rxf2+
        • 2.Rxf2#
      • 1...Rxe3
        • 2.fxe3#
      • 1...Rxg3
        • 2.Sxe6#
      • 1...Rxc5
        • 2.Qd4#
      • 1...Bxf1
        • 2.Rg4#
      • 1...Bxf5
        • 2.Sg2#
      • 1...exf5
        • 2.Sd5#
      • 1...Bg4
        • 2.Rxg4#
      • 1...e5
        • 2.Qh6#
      • 1...Rc1
        • 2.Qd4#
      • 1...Rc2
        • 2.Qd4#
      • 1...Rc3
        • 2.Qd4#
      • 1...Rd4
        • 2.Qxd4#
      • 1...Re4
        • 2.Sd3#
      • 1...Bg2
        • 2.Rg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
    • R(d);SBLOCK::S(H)
    • P(g);N_GUARD,SBLOCK::S(F)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • K(e);S_FLIGHT::QAR1(J),XP(g)
      • Refutation
        • B(b);XR(G)
  • Actual
    • Q(J);
    • Vars
      • R(a);CHECK,OGATE,P_SPINR(a),XP(C)::R(A),XR(a)
      • R(a);OGATE,XS(F)::R(A)+P(C)DCHECK,XR(a)
      • R(a);XR(G)::S(H),XP(g)
      • R(d);N_GUARD,XS(H)::QAR2(J)
      • B(b);N_GUARD,XR(A)::R1(G)
      • B(b);N_GUARD,SBLOCK,XP(I)::S(F)
      • P(g);N_GUARD,SBLOCK,XP(I)::S(F)
      • B(b);N_GUARD::R1(G),XB(b)
      • P(g);SBLOCK::QAB(J)
      • R(d);N_GUARD::QAR2(J)
      • R(d);N_GUARD,P_PINP(C)::QAR2(J)
      • R(d);N_GUARD::QAR2(J),XR(d)
      • R(d);SBLOCK::S(H)
      • B(b);N_GUARD::R1(G)
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