MESON Chess Problem Database

Problem Display
PID: 223281 (4K1Qb/8/4N1nn/5k2/7B/3N1P2/8/8 w - - 0 1)

Tinney, William E

Brooklyn Union, 1886

4K1Qb/8/4N1nn/5k2/7B/3N1P2/8/8

#2

6 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4
      • 2.Sxd4#
    • 1...Bg7
      • 2.Sxg7#
    • 1...Se5
      • 2.Sd4#
  • Tries
    • 1.Qf7+?
      • 1...Bf6
        • 2.Sd4#
        • 2.Sg7#
        • 2.Qxf6#
      • 1...Sxf7!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Sd4#
      • 1...Kxe6
        • 2.Qd7#
      • 1...Bxg7
        • 2.Sxg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(d);N_GUARD::S(D),XB(d)
    • S(b);S_CUTB(d)::S(D)
  • Tries
    • Try
      • Q(F);CHECK
      • Refutation
        • S(c);XQ(F)
  • Actual
    • Q(F);
    • Threat
      • S(D)
    • Vars
      • K(a);OGATEB,S_FLIGHT,XS(D)::QAB1(F)
      • B(d);XQ(F)::S(D),XB(d)
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