MESON Chess Problem Database

Problem Display
PID: 2295 (3r4/3bp1q1/R4p2/4k1n1/3N2P1/B2R2P1/2PN4/5K2 w - - 0 1)

Davidson, L

Source?, 0000

3r4/3bp1q1/R4p2/4k1n1/3N2P1/B2R2P1/2PN4/5K2

#2

9 + 7

1679 American Chess Nuts 1868

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.S4f3#
    • 1...Be6
      • 2.Sc6#
    • 1...Sf3
      • 2.S4xf3#
    • 1...Sh3
      • 2.S4f3#
    • 1...Se4
      • 2.S4f3#
    • 1...Se6
      • 2.S4f3#
    • 1...Sf7
      • 2.S4f3#
    • 1...Sh7
      • 2.S4f3#
  • Tries
    • 1.Bd6+?
      • 1...Kd5
        • 2.c4#
      • 1...exd6!
  • Keys
    • 1.Re6+!
      • 1...Kd5
        • 2.c4#
      • 1...Bxe6
        • 2.Sc6#
      • 1...Sxe6
        • 2.S4f3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • K(a);P-FLIGHT::R(E)+S(G)
    • B(d);N_GUARD,SBLOCK::S(G)
    • S(b);N_GUARD::S(G),XS(b)
    • S(b);N_GUARD::S(G)
  • Tries
    • Try
      • B(D);CHECK
      • Vars
        • K(a);P-FLIGHT::P(B)
      • Refutation
        • P(e);XB(D)
  • Actual
    • R(I);CHECK
    • Vars
      • K(a);P-FLIGHT::P(B)
      • B(d);SBLOCK,XR(I)::S(G)
      • S(b);SBLOCK,XR(I)::S(G)
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