MESON Chess Problem Database

Problem Display
PID: 52588 (8/8/8/2Pp2P1/K2k4/3N3B/5NQ1/6B1 w - - 0 1)

Sonnenfeld, Felix Alexander

Deca, 1933

8/8/8/2Pp2P1/K2k4/3N3B/5NQ1/6B1

#2

8 + 2

5309 O Mosqueteiro do Rei 1997

SOLUTION

  • SOUND
  • Tries
    • 1.Sd1+?
      • 1...Kc4
        • 2.S3b2#
        • 2.Se5#
        • 2.Qc2#
      • 1...Kxd3!
    • 1.Se4+?
      • 1...Kc4
        • 2.Sb2#
        • 2.Se5#
        • 2.Qc2#
      • 1...Kxd3!
    • 1.Sb2?
      • 1...Kc3
        • 2.Sfd1#
      • 1...Ke3
        • 2.Sfd3#
      • 1...Ke5
        • 2.Sfd3#
      • 1...Kxc5!
  • Keys
    • 1.Se5!
      • 1...Kc3
        • 2.Sd1#
      • 1...Ke3
        • 2.Sfd3#
      • 1...Kxc5
        • 2.Se4#
      • 1...Kxe5
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);CHECK
      • Refutation
        • K(a);P-FLIGHT,XS(D)
    • Try
      • S(B);CHECK
      • Refutation
        • K(a);P-FLIGHT,XS(D)
    • Try
      • S(D);
      • Vars
        • K(a);S_FLIGHT::S(B)
        • K(a);S_FLIGHT::B(A)+S(B)
      • Refutation
        • K(a);S_FLIGHT,XP(G)
  • Actual
    • S(D);
    • Vars
      • K(a);S_FLIGHT::S(B)
      • K(a);S_FLIGHT::B(A)+S(B)
      • K(a);S_FLIGHT,XP(G)::B(A)+S(B),DCHECK
      • K(a);S_FLIGHT,XS(D)::S(B)
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