MESON Chess Problem Database

Problem Display
PID: 114938 (8/6P1/B4QN1/7k/8/8/7K/3b4 w - - 0 1)

Burnette, A

La Presse, 1898

8/6P1/B4QN1/7k/8/8/7K/3b4

#2

5 + 2

5454 Near Snap 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bg4
      • 2.Sf4#
  • Tries
    • 1.Be2+?
      • 1...Kh6
        • 2.Sf8#
      • 1...Bxe2!
    • 1.g8Q?
      • threat
        • 2.Sf4#
        • 2.Qh4#
      • 1...Kh6
        • 2.Sf4#
        • 2.Qgh8#
      • 1...Kg4!
    • 1.g8S?
      • threat
        • 2.Qf5#
      • 1...Bc2
        • 2.Be2#
      • 1...Bg4
        • 2.Sf4#
      • 1...Kg4!
    • 1.g8R?
      • threat
        • 2.Sf4#
        • 2.Qh4#
      • 1...Kh6
        • 2.Rh8#
      • 1...Kg4!
  • Keys
    • 1.Bd3!
      • threat
        • 2.Qh4#
      • 1...Kg4
        • 2.Qf5#
      • 1...Kh6
        • 2.Sf4#

This anticipates 10728(1967), 38878(1996)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(a);SBLOCK::S(D)
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR(C)+S(D)
      • Refutation
        • B(a);XB(B)
    • Try
      • P(E);
      • Threat
        • DUALS(2)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(E);
      • Threat
        • QAR2(C)
      • Vars
        • B(a);N_GUARD::B(B)
        • B(a);SBLOCK::S(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(E);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT::R(E)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • B(B);
    • Threat
      • QAR1(C)
    • Vars
      • K(b);S_FLIGHT::QAB1(C)
      • K(b);P-FLIGHT::QAR(C)+S(D)
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