MESON Chess Problem Database

Problem Display
PID: 201512 (2b5/1N6/N1kPp3/K1B1R3/p3p3/8/2B5/8 w - - 0 1)

Sacconi, Antonio

L'Alfiere di Re, 1922

2b5/1N6/N1kPp3/K1B1R3/p3p3/8/2B5/8

#2

7 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxb7
      • 2.Bxe4#
    • 1...Kd7
      • 2.Bxa4#
    • 1...Bxb7
      • 2.Sb8#
      • 2.Bxa4#
    • 1...Bd7
      • 2.Sd8#
      • 2.Bxe4#
  • Tries
    • 1.Sb4+?
      • 1...Kd7
        • 2.Bxa4#
      • 1...Kxb7!
  • Keys
    • 1.d7!
      • threat
        • 2.dxc8Q#
      • 1...Kxb7
        • 2.Bxe4#
      • 1...Kxd7
        • 2.Bxa4#
      • 1...Bxb7
        • 2.Bxa4#
      • 1...Bxd7
        • 2.Sd8#
        • 2.Bxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT,XS(G)::B(A),XP(b)
    • K(c);S_FLIGHT::B(A),XP(a)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(c);S_FLIGHT::B(A),XP(a)
      • Refutation
        • K(c);S_FLIGHT,XS(G)
  • Actual
    • P(F);
    • Threat
      • PXB(e)=Q
    • Vars
      • K(c);S_FLIGHT,XS(G)::B(A),XP(b)
      • K(c);S_FLIGHT,XP(F)::B(A),XP(a)
      • B(e);SBLOCK,XS(G)::B(A),XP(a)
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