MESON Chess Problem Database

Problem Display
PID: 206257 (8/4K2p/4PBPr/p6P/1R1NNk2/7p/2QP1bnn/3B4 w - - 0 1)

Dent, Robert

L'Alfiere di Re, 1925

8/4K2p/4PBPr/p6P/1R1NNk2/7p/2QP1bnn/3B4

#2

11 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Se2+?
      • 1...Kf3
        • 2.Sg5#
      • 1...Kf5
        • 2.Sxf2#
        • 2.S4c3#
        • 2.S4g3#
        • 2.Sc5#
        • 2.Sg5#
        • 2.Sd6#
      • 1...Kg4!
    • 1.Sg5?
      • threat
        • 2.Se2#
        • 2.Qc7#
      • 1...Kg3
        • 2.Se2#
        • 2.Sf5#
      • 1...axb4
        • 2.Qc7#
      • 1...Sf3
        • 2.Se2#
      • 1...Sg4
        • 2.Se2#
      • 1...Bxd4!
  • Keys
    • 1.Sg3!
      • threat
        • 2.Qc7#
      • 1...Kxg3
        • 2.Sf5#
      • 1...Rxh5
        • 2.Sxh5#
      • 1...Bxg3
        • 2.Qf5#
      • 1...Sf3
        • 2.Sde2#
      • 1...Sg4
        • 2.Sge2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(e);P-FLIGHT::S(F)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Vars
        • P(f);XR(D)::QAB(B)
        • S(c);::R(D)+S(E),DCHECK
        • S(c);SBLOCK::R(D)+S(E),DCHECK
      • Refutation
        • B(a);P_SPINB(a),XS(E)
  • Actual
    • S(F);
    • Threat
      • QAB(B)
    • Vars
      • K(e);S_FLIGHT,XS(F)::S(E)
      • R(g);XP(G)::S(F),XR(g)
      • B(a);SBLOCK,XS(F)::QAR1(B)
      • S(c);SBLOCK::R(D)+S(E),DCHECK
      • S(c);SBLOCK::S(F)
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