MESON Chess Problem Database

Problem Display
PID: 221377 (1B6/p7/8/K3Pr2/2Np1k2/2p5/1R4Q1/1B1n4 w - - 0 1)

Silverberg, BW

British Chess Magazine, 1926

1B6/p7/8/K3Pr2/2Np1k2/2p5/1R4Q1/1B1n4

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe5+
      • 2.Bxe5#
    • 1...Rf6
      • 2.exf6#
      • 2.e6#
    • 1...Sf2
      • 2.Rxf2#
    • 1...Se3
      • 2.Rf2#
  • Tries
    • 1.Sb6?
      • threat
        • 2.Sd5#
      • 1...Ke3
        • 2.Sd5#
        • 2.Qe4#
      • 1...Se3
        • 2.Rf2#
      • 1...axb6+!
    • 1.Bxf5?
      • threat
        • 2.Qg4#
      • 1...Sf2
        • 2.Rxf2#
      • 1...Se3
        • 2.Rf2#
      • 1...Kxf5!
  • Keys
    • 1.Se3!
      • threat
        • 2.Sd5#
      • 1...Kxe3
        • 2.Qe4#
      • 1...Sxe3
        • 2.Rf2#
      • 1...dxe3
        • 2.Rb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(e);CHECK,OGATE,P_SPINR(e),XP(F)::B(G),XR(e)
    • S(a);N_GUARD::R(B),XS(a)
    • S(a);N_GUARD::R(B)
  • Tries
    • Try
      • S(D);
      • Threat
        • S(D)
      • Vars
        • S(a);N_GUARD,SBLOCK::R(B)
      • Refutation
        • P(f);CHECK,XS(D)
    • Try
      • B(A);N_SPINP(F),XR(e)
      • Threat
        • QAR1(C)
      • Vars
        • S(a);N_GUARD::R(B),XS(a)
        • S(a);N_GUARD::R(B)
      • Refutation
        • K(d);P-FLIGHT,XB(A)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • K(d);S_FLIGHT,XS(D)::QAR1(C)
      • S(a);N_GUARD,SBLOCK,XS(D)::R(B)
      • P(c);OGATEB,SBLOCK,XS(D)::R(B)
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