MESON Chess Problem Database

Problem Display
PID: 64390 (1b1R1B2/4N3/3n2N1/2P5/2rkP1R1/1Q3p2/2pp3K/3b4 w - - 0 1)

Charlick, Arthur Robert Baker

Chess Amateur (The), 1910

1b1R1B2/4N3/3n2N1/2P5/2rkP1R1/1Q3p2/2pp3K/3b4

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc5
      • 2.e5#
  • Tries
    • 1.Bh6?
      • threat
        • 2.Be3#
        • 2.Qe3#
      • 1...Rxc5
        • 2.Be3#
        • 2.e5#
      • 1...Rc3
        • 2.Qd5#
      • 1...Ra4
        • 2.Be3#
      • 1...Rb4
        • 2.Be3#
      • 1...Kxc5!
    • 1.Rxd6+?
      • 1...Kxc5
        • 2.Qb6#
      • 1...Bxd6+!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Qe3#
      • 1...Sxe4+
        • 2.Sc7#
      • 1...Sb5+
        • 2.e5#
      • 1...Sf5+
        • 2.e5#
      • 1...Sb7+
        • 2.e5#
      • 1...Sf7+
        • 2.e5#
      • 1...Sc8+
        • 2.e5#
      • 1...Se8+
        • 2.e5#
      • 1...Kxc5
        • 2.Qb6#
      • 1...Rxc5
        • 2.Bg7#
      • 1...Rc3
        • 2.Qxc3#
      • 1...Ra4
        • 2.Qc3#
      • 1...Rb4
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • R(e);SBLOCK,XP(E)::R(D)+P(C)
  • Tries
    • Try
      • B(I);
      • Threat
        • DUALS(2)
      • Vars
        • R(e);OGATE,SBLOCK::QAR1(B)
        • R(e);::B(I)
      • Refutation
        • K(f);N_SPINS(g),S_FLIGHT,XP(E)
    • Try
      • R(H);CHECK,P_SPINR(H),XS(g)
      • Vars
        • K(f);S_FLIGHT,XP(E)::QAB1(B)
      • Refutation
        • B(h);CHECK,XR(H)
  • Actual
    • S(G);N_PINS(g)
    • Threat
      • QAB1(B)
    • Vars
      • S(g);CHECK,P_SPINS(g),XP(C)::R(H)+S(G)
      • S(g);CHECK,N_GUARD::R(D)+P(C)
      • K(f);OGATEB,P_SPINS(g),S_FLIGHT,XP(E)::QAB1(B)
      • R(e);SBLOCK,XP(E)::B(I)
      • R(e);N_GUARD::QAB1(B),XR(e)
      • R(e);N_GUARD::QAB1(B)
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