MESON Chess Problem Database

Problem Display
PID: 63477 (3R4/2pp1B1Q/3kpB2/N2NR3/K2b4/8/8/8 w - - 0 1)

Slater, George James

Chess Amateur (The), 1909

3R4/2pp1B1Q/3kpB2/N2NR3/K2b4/8/8/8

#2

8 + 5

15351 SCPF/BCPS Black Books 2016

SOLUTION

  • SOUND
  • Sets
    • 1...exd5
      • 2.Rxd5#
    • 1...c6
      • 2.Sb7#
  • Tries
    • 1.Rxe6+?
      • 1...Kxd5
        • 2.Rc6#
      • 1...Kc5!
    • 1.Rxd7+?
      • 1...Kc5
        • 2.Be7#
      • 1...Kxd7!
  • Keys
    • 1.Qd3!
      • 1...Kc5
        • 2.Qa3#
      • 1...Bxe5
        • 2.Be7#
      • 1...exd5
        • 2.Rxd5#
      • 1...Ba1
        • 2.Sc3#
      • 1...Bg1
        • 2.Se3#
      • 1...Bb2
        • 2.Sc3#
      • 1...Bf2
        • 2.Se3#
      • 1...Bc3
        • 2.Sxc3#
      • 1...Be3
        • 2.Sxe3#
      • 1...Bc5
        • 2.Rxe6#
      • 1...Bb6
        • 2.Sxb6#
      • 1...Ba7
        • 2.Sb6#
      • 1...c5
        • 2.Qa6#
      • 1...c6
        • 2.Sb7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATE,XS(C)::R1(D),XP(c)
    • P(d);SBLOCK::S(B)
  • Tries
    • Try
      • R(D);CHECK,XP(c)
      • Vars
        • K(b);OGATE,P-FLIGHT,XS(C)::B(F)+R(D)
      • Refutation
        • K(b);N_SPINP(e),S_FLIGHT
    • Try
      • R(H);CHECK,XP(e)
      • Vars
        • K(b);S_FLIGHT::B(E)
      • Refutation
        • K(b);P-FLIGHT,XR(H)
  • Actual
    • Q(G);
    • Vars
      • K(b);N_SPINP(e),S_FLIGHT::QAB(G)
      • B(a);SBLOCK,XR(D)::B(E)
      • P(c);OGATE,XS(C)::R1(D),XP(c)
      • B(a);::QAR(G)+S(C)
      • B(a);::QAR(G)+S(C),XB(a)
      • B(a);SBLOCK::R1(D),XP(c)
      • P(d);N_GUARD,SBLOCK,S_CUTB(a)::QAR(G)
      • P(d);SBLOCK::S(B)
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