MESON Chess Problem Database

Problem Display
PID: 151670 (5R2/1p2Kp2/1P2p3/5Rp1/Q1N1k3/2r3P1/2P1N3/1B6 w - - 0 1)

Clark, WA

Hampstead and Highgate Express, 1897

(First published on Sat Apr 17 1897)

5R2/1p2Kp2/1P2p3/5Rp1/Q1N1k3/2r3P1/2P1N3/1B6

#2

10 + 6

14867 BCPS Library 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc2
      • 2.Bxc2#
      • 2.Qxc2#
    • 1...Ra3
      • 2.c3#
    • 1...Rb3
      • 2.cxb3#
    • 1...Re3
      • 2.Sd6#
    • 1...Rf3
      • 2.Re5#
  • Tries
    • 1.Sd2+?
      • 1...Kxf5
        • 2.Qe4#
      • 1...Ke3!
    • 1.Rf4+?
      • 1...Kd5
        • 2.Qb5#
      • 1...gxf4!
    • 1.Qc6+?
      • 1...Kxf5
        • 2.Qxe6#
      • 1...bxc6!
  • Keys
    • 1.Qd7!
      • 1...Kxf5
        • 2.Qxe6#
      • 1...Rxc2
        • 2.Bxc2#
      • 1...Rxg3
        • 2.Sxg3#
      • 1...Rxc4
        • 2.Qd3#
      • 1...exf5
        • 2.Qxb7#
      • 1...Ra3
        • 2.c3#
      • 1...Rb3
        • 2.cxb3#
      • 1...Rd3
        • 2.Qxd3#
      • 1...Re3
        • 2.Sd6#
      • 1...Rf3
        • 2.Re5#
      • 1...g4
        • 2.Rf4#
      • 1...e5
        • 2.Sxc3#
      • 1...f6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • R(a);OGATE::B(A)+P(B)
    • R(a);OGATE::B(A)+P(B),XR(a)
    • R(a);SBLOCK::QAR(E)+S(F),DCHECK
    • R(a);SBLOCK::R1(G)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(b);P_SPINP(f),S_FLIGHT,XR(G)::QAB1(E)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(G);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(E)
      • Refutation
        • P(c);XR(G)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);P_SPINP(f),S_FLIGHT,XR(G)::QAB1(E),XP(d)
      • Refutation
        • P(e);XQ(E)
  • Actual
    • Q(E);
    • Vars
      • K(b);P_SPINP(d),S_FLIGHT,XR(G)::QAB1(E),XP(d)
      • R(a);OGATE,P_SPINR(a),XP(B)::B(A),XR(a)
      • R(a);XP(D)::S(C),XR(a)
      • R(a);N_GUARD,XS(F)::QAB1(E)
      • P(d);SBLOCK,XR(G)::QAB(E),XP(e)
      • R(a);OGATE::B(A)+P(B)
      • R(a);OGATE::B(A)+P(B),XR(a)
      • R(a);N_GUARD::QAB1(E),XR(a)
      • R(a);SBLOCK::S(F)
      • R(a);SBLOCK::R1(G)
      • P(c);N_GUARD::R1(G)
      • P(d);::S(C),XR(a)
      • P(f);N_GUARD::QAR2(E),XP(d)
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