MESON Chess Problem Database

Problem Display
PID: 275619 (5b1r/6B1/3n1PN1/3N3P/1PpkP2R/1bR1pp1Q/1K3p2/8 w - - 0 1)

Palazon, Luis Gomez

Problemist Ukraini, 2023

5b1r/6B1/3n1PN1/3N3P/1PpkP2R/1bR1pp1Q/1K3p2/8

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Be7
      • 2.fxe7#
  • Tries
    • 1.Sde7?
      • threat
        • 2.Sc6#
      • 1...Bxe7
        • 2.fxe7#
      • 1...Sxe4
        • 2.Qd7#
      • 1...Ba4!
    • 1.Qe6?
      • threat
        • 2.Qe5#
      • 1...Sf7
        • 2.e5#
      • 1...Rxh5!
    • 1.Qxf3?
      • threat
        • 2.Qxe3#
      • 1...Sxe4
        • 2.Qxe4#
      • 1...Sf5
        • 2.exf5#
      • 1...e2
        • 2.Qxf2#
        • 2.Qe3#
      • 1...f1S!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Qa7#
      • 1...Sxe4
        • 2.Sde7#
      • 1...Sb5
        • 2.e5#
      • 1...Sf5
        • 2.exf5#
      • 1...Sb7
        • 2.e5#
      • 1...Sf7
        • 2.e5#
      • 1...Sc8
        • 2.e5#
      • 1...Se8
        • 2.e5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • B(h);OGATE::B(K)+P(I),XB(h)
  • Tries
    • Try
      • S(G);
      • Threat
        • S(G)
      • Vars
        • B(h);OGATE,XS(G)::B(K)+P(I),XB(h)
        • S(g);OGATEB,P_SPINS(g),XP(E)::QAR(C)
      • Refutation
        • B(b);
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • S(g);N_GUARD::R(F)+P(E)
      • Refutation
        • R(i);XP(H)
    • Try
      • Q(C);XP(d)
      • Threat
        • QAB1(C),XP(c)
      • Vars
        • S(g);OGATE,P_SPINS(g),XP(E)::QAR1(C),XS(g)
        • S(g);OGATE::R(F)+P(E),XS(g)
      • Refutation
        • P(a);
  • Actual
    • Q(C);
    • Threat
      • QAB(C)
    • Vars
      • S(g);P_SPINS(g),XP(E)::QAR(C)+S(G)
      • S(g);N_GUARD::R(F)+P(E)
      • S(g);OGATE::R(F)+P(E),XS(g)
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