MESON Chess Problem Database

Problem Display
PID: 84946 (5N1B/4NR2/3r2P1/QpPp1p1K/3n1k2/3Pn3/4PP2/8 w - - 0 1)

Petite, Efren

El Ajedrez Espanol, 1963

5N1B/4NR2/3r2P1/QpPp1p1K/3n1k2/3Pn3/4PP2/8

#2

11 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg6
      • 2.Sexg6#
      • 2.Sfxg6#
  • Tries
    • 1.Qb4?
      • threat
        • 2.Qxd4#
      • 1...Re6
        • 2.Sxe6#
      • 1...Sc2
        • 2.Rxf5#
      • 1...Sc4!
    • 1.Qc7?
      • threat
        • 2.Qxd6#
      • 1...Sc4
        • 2.Sxd5#
      • 1...Sg4
        • 2.Sxd5#
      • 1...Sf3
        • 2.Se6#
      • 1...Sc6
        • 2.Se6#
      • 1...Sxe2!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Qxe3#
      • 1...Re6
        • 2.Sxd5#
      • 1...Sc2
        • 2.Rxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);P_PINS(b)
      • Threat
        • QAR2(D),XS(b)
      • Vars
        • R(g);N_GUARD::S(J),XR(g)
        • S(a);N_GUARD::R1(I),XP(f)
      • Refutation
        • S(a);N_SPINS(b)
    • Try
      • Q(D);P_PINR(g)
      • Threat
        • QAB(D),XR(g)
      • Vars
        • S(a);N_GUARD::S(H),XP(e)
        • S(b);N_GUARD::S(J)
      • Refutation
        • S(b);XP(A)
  • Actual
    • Q(D);P_PINS(a)
    • Threat
      • QAB1(D),XS(a)
    • Vars
      • R(g);N_GUARD::S(H),XP(e)
      • S(b);N_GUARD::R1(I),XP(f)
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