MESON Chess Problem Database

Problem Display
PID: 7327 (1R1N1B1n/5p1Q/8/1ppkP1P1/R2N2p1/6n1/4p3/4K3 w - - 0 1)

Petite, Efren

Problemas, 1999

1R1N1B1n/5p1Q/8/1ppkP1P1/R2N2p1/6n1/4p3/4K3

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...cxd4
      • 2.Rxb5#
  • Tries
    • 1.Qd3?
      • threat
        • 2.Sf3#
        • 2.S4c6#
      • 1...Kxe5
        • 2.S4c6#
      • 1...cxd4
        • 2.Rxb5#
        • 2.Qxd4#
      • 1...c4
        • 2.Rxb5#
      • 1...Sf5!
  • Keys
    • 1.S4c6!
      • threat
        • 2.Qd3#
      • 1...Sf5
        • 2.Qh1#
      • 1...Se4
        • 2.Qxe4#
      • 1...Sg6
        • 2.Qxf7#
      • 1...c4
        • 2.Rxb5#
      • 1...f5
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • P(e);OGATEB,XS(C)::R(G),XP(d)
  • Tries
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • K(f);P-FLIGHT,XP(D)::S(C)
        • P(e);OGATEB::R(G),XP(d)
      • Refutation
        • S(b);
  • Actual
    • S(C);
    • Threat
      • QAR2(F)
    • Vars
      • S(b);N_GUARD::QAB(F)
      • S(b);N_GUARD::QAB1(F),XS(b)
      • S(h);N_GUARD::QAB(F),XP(g)
      • P(e);OGATEB::R(G),XP(d)
      • P(g);OGATE::QAR2(F)
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