MESON Chess Problem Database

Problem Display
PID: 54619 (8/2p4q/Kp5p/7R/R1N1pk2/1p2n1N1/1r1nQ2P/2B2b2 w - - 0 1)

Santiago, Joao Baptista

Sonnenfeld, Felix Alexander

Sinfonie Scacchistiche, 1975

8/2p4q/Kp5p/7R/R1N1pk2/1p2n1N1/1r1nQ2P/2B2b2

#2

8 + 11

5309 O Mosqueteiro do Rei 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Bxe3#
    • 1...Sf5
      • 2.Qxe4#
  • Tries
    • 1.Rh4+?
      • 1...Sg4
        • 2.Rxg4#
        • 2.Qxg4#
        • 2.Qe3#
      • 1...Kg5!
  • Keys
    • 1.Se5!
      • threat
        • 2.Sd3#
      • 1...Bxe2+
        • 2.Sxe2#
      • 1...Qd7
        • 2.Sg6#
      • 1...Sf3
        • 2.Bxe3#
      • 1...Sdc4
        • 2.Qg4#
      • 1...Sec4
        • 2.Qf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • S(c);OGATE,P_SPINS(e)::B(A),XS(e)
    • S(e);OGATE,P_SPINS(c)::QAR1(B),XP(f)
  • Tries
    • Try
      • R(G);CHECK
      • Refutation
        • K(g);S_FLIGHT
  • Actual
    • S(F);P_PINP(f),P_SPINQ(B)
    • Threat
      • S(F)
    • Vars
      • B(a);CHECK,XQ(B)::S(D),XB(a)
      • Q(k);N_GUARD::S(F)
      • S(c);OGATE,P_SPINS(e)::B(A),XS(e)
      • S(c);N_PINQ(B),N_SPINP(f),P_SPINS(e)::QAR1(B)
      • S(e);N_PINQ(B),N_SPINP(f),P_SPINS(c)::QAR2(B)
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