MESON Chess Problem Database

Problem Display
PID: 143442 (2K5/6p1/2R1N2p/2pk4/p3N1RQ/2np1P2/P2P4/8 w - - 0 1)

Anonymous

Hackney Mercury, 1894

2K5/6p1/2R1N2p/2pk4/p3N1RQ/2np1P2/P2P4/8

#2

9 + 7

15 British Chess Magazine 1894

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Sxc3#
  • Tries
    • 1.Rd6+?
      • 1...Kc4
        • 2.Sxc3#
      • 1...Ke5!
    • 1.Qg5+?
      • 1...Kc4
        • 2.Sxc3#
        • 2.Sd6#
        • 2.Qxc5#
      • 1...Kxc6
        • 2.Qxc5#
      • 1...hxg5!
    • 1.Qh5+?
      • 1...Kc4
        • 2.Sxc3#
        • 2.Sd6#
        • 2.Qxc5#
      • 1...Kxc6
        • 2.Qxc5#
      • 1...g5!
  • Keys
    • 1.Rg6!
      • threat
        • 2.Rxc5#
      • 1...Kc4
        • 2.Sxc3#
      • 1...Ke5
        • 2.Qh5#
      • 1...Kxc6
        • 2.Sc7#
      • 1...Sxe4
        • 2.Qxe4#
      • 1...c4
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(e);P_SPINP(d),S_FLIGHT::R(E)+S(D),XS(a)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • K(e);S_FLIGHT::R(E)+S(D),XS(a)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(e);OGATE,S_FLIGHT,XR(G)::QAR1(F),XP(d)
      • Refutation
        • P(f);XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • K(e);OGATE,S_FLIGHT,XR(G)::QAR1(F),XP(d)
      • Refutation
        • P(g);P_SPINP(g)
  • Actual
    • R(E);
    • Threat
      • R1(G),XP(d)
    • Vars
      • K(e);P_SPINP(d),S_FLIGHT::QAR(F)+S(D),XS(a)
      • K(e);P-FLIGHT::QAR(F)
      • K(e);S_FLIGHT,XR(G)::R(E)+S(H)
      • S(a);OGATE,XS(D)::QAB1(F),XS(a)
      • P(d);::R1(G)
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