MESON Chess Problem Database

Problem Display
PID: 239993 (4BQ2/8/2ppnpN1/2rP1P1r/3pkp1P/2pR4/2K5/5RB1 w - - 0 1)

Petite, Efren

Sinfonie Scacchistiche, 1976

4BQ2/8/2ppnpN1/2rP1P1r/3pkp1P/2pR4/2K5/5RB1

#2

10 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Se7?
      • threat
        • 2.Re1#
      • 1...Ke5
        • 2.Re1#
      • 1...f3!
    • 1.Qxd6?
      • threat
        • 2.Qxe6#
      • 1...Kxf5
        • 2.Qxe6#
      • 1...Rxf5
        • 2.Re1#
      • 1...Sg5
        • 2.Rxf4#
      • 1...Sc7
        • 2.Rxf4#
      • 1...Sg7
        • 2.Rxf4#
      • 1...Sd8
        • 2.Rxf4#
      • 1...Sf8
        • 2.Rxf4#
      • 1...Rxd5!
    • 1.Qxf6?
      • threat
        • 2.Qxe6#
      • 1...Kxd5
        • 2.Qxe6#
      • 1...Rxd5
        • 2.Re1#
      • 1...Sg5
        • 2.Rxd4#
      • 1...Sc7
        • 2.Rxd4#
      • 1...Sg7
        • 2.Rxd4#
      • 1...Sd8
        • 2.Rxd4#
      • 1...Sf8
        • 2.Rxd4#
      • 1...Rxf5!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qxe6#
      • 1...Kxd5
        • 2.Qxe6#
      • 1...Kxf5
        • 2.Qxe6#
      • 1...Rxd5
        • 2.Rxf4#
      • 1...Rxf5
        • 2.Rxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(H);
      • Threat
        • R(A)
      • Vars
        • K(c);P-FLIGHT::R(A)
      • Refutation
        • P(d);
    • Try
      • Q(J);XP(h)
      • Threat
        • QAR2(J),XS(i)
      • Vars
        • K(c);P_SPINP(d),S_FLIGHT,XP(G)::QAB1(J),XS(i)
        • R(f);SBLOCK,XP(G)::R(A)
        • S(i);N_GUARD::R1(A),XP(d)
      • Refutation
        • R(e);XP(F)
    • Try
      • Q(J);XP(j)
      • Threat
        • QAR2(J),XS(i)
      • Vars
        • K(c);P_SPINP(b),S_FLIGHT,XP(F)::QAB1(J),XS(i)
        • R(e);SBLOCK,XP(F)::R(A)
        • S(i);N_GUARD::R1(D),XP(b)
      • Refutation
        • R(f);XP(G)
  • Actual
    • Q(J);P_PINS(i)
    • Threat
      • QAR2(J),XS(i)
    • Vars
      • K(c);N_SPINS(i),P_SPINP(b),S_FLIGHT,XP(F)::QAB1(J),XS(i)
      • K(c);N_SPINS(i),P_SPINP(d),S_FLIGHT,XP(G)::QAB1(J),XS(i)
      • R(e);SBLOCK,XP(F)::R1(A),XP(d)
      • R(f);SBLOCK,XP(G)::R1(D),XP(b)
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