MESON Chess Problem Database

Problem Display
PID: 238934 (4k1K1/2p1pn2/2N3np/3R1PQ1/4N3/8/b3BPr1/4R3 w - - 0 1)

Petite, Efren

Problemas, 1986

4k1K1/2p1pn2/2N3np/3R1PQ1/4N3/8/b3BPr1/4R3

#2

9 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...e5
      • 2.Sf6#
    • 1...e6
      • 2.Sf6#
  • Tries
    • 1.Bc4?
      • threat
        • 2.Sf6#
      • 1...Sfe5
        • 2.Rd8#
      • 1...Sge5!
    • 1.Bg4?
      • threat
        • 2.Sf6#
      • 1...Sge5
        • 2.Qxe7#
      • 1...Sfe5!
  • Keys
    • 1.Bh5!
      • threat
        • 2.Sf6#
      • 1...Sge5
        • 2.Rd8#
      • 1...Sfe5
        • 2.Qxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • P(f);N_GUARD::S(D)
  • Tries
    • Try
      • B(B);
      • Threat
        • S(D)
      • Vars
        • S(g);N_GUARD::R1(E)
      • Refutation
        • S(c);P_PINQ(G)
    • Try
      • B(B);
      • Threat
        • S(D)
      • Vars
        • S(c);N_GUARD::QAR1(G),XP(f)
      • Refutation
        • S(g);P_PINR(E)
  • Actual
    • B(B);
    • Threat
      • S(D)
    • Vars
      • S(c);P_PINQ(G),P_SPINS(g)::R1(E)
      • S(g);P_PINR(E),P_SPINS(c)::QAR1(G),XP(f)
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