MESON Chess Problem Database

Problem Display
PID: 100874 (1r6/1p1r4/2R5/3kN3/4p3/2K5/4B2Q/5bB1 w - - 0 1)

Coombs, Leslie D

Good Companions, 1918

1r6/1p1r4/2R5/3kN3/4p3/2K5/4B2Q/5bB1

#2

6 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bg2
      • 2.Bc4#
    • 1...Bh3
      • 2.Bc4#
    • 1...e3
      • 2.Bf3#
  • Tries
    • 1.Sxd7?
      • threat
        • 2.Rd6#
        • 2.Qd6#
      • 1...bxc6
        • 2.Qe5#
      • 1...e3
        • 2.Bf3#
      • 1...Rc8
        • 2.Qd6#
      • 1...Kxc6!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Sb4#
      • 1...Kxc6
        • 2.Sb4#
      • 1...exd3
        • 2.Bf3#
      • 1...bxc6
        • 2.Qe5#
      • 1...Rd6
        • 2.Rxd6#
        • 2.Qxd6#
      • 1...e3
        • 2.Bf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::B(B)
    • P(b);OGATEB::B(B)
  • Tries
    • Try
      • S(E);XR(e)
      • Threat
        • DUALS(2)
      • Vars
        • P(d);SBLOCK,XR(F)::QAR1(C)
        • P(b);OGATEB::B(B)
        • R(f);P_PINR(F)::QAR1(C)
      • Refutation
        • K(c);S_FLIGHT,XR(F)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • K(c);S_FLIGHT,XR(F)::S(E)
      • P(b);OGATEB,XS(E)::B(B)
      • P(d);SBLOCK,XR(F)::QAR1(C)
      • P(b);OGATEB::B(B)
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