MESON Chess Problem Database

Problem Display
PID: 163920 (Q2nkbR1/3rB2p/3p1KnP/3P4/1R6/8/8/3B4 w - - 0 1)

Petite, Efren

Best Problems, 2014

Q2nkbR1/3rB2p/3p1KnP/3P4/1R6/8/8/3B4

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Ra7
      • 2.Qxd8#
    • 1...Rb7
      • 2.Qxd8#
    • 1...Rc7
      • 2.Qxd8#
    • 1...Sf4
      • 2.Rxf8#
    • 1...Sh4
      • 2.Rxf8#
    • 1...Se5
      • 2.Rxf8#
    • 1...Sh8
      • 2.Rxf8#
  • Tries
    • 1.Bh5?
      • threat
        • 2.Rxf8#
      • 1...Ra7
        • 2.Qxd8#
      • 1...Rb7
        • 2.Qxd8#
      • 1...Rc7
        • 2.Qxd8#
      • 1...Rxe7!
    • 1.Rb8?
      • 1...Rxe7
        • 2.Rxd8#
      • 1...Ra7
        • 2.Rxd8#
      • 1...Rb7
        • 2.Rxd8#
      • 1...Rc7
        • 2.Rxd8#
      • 1...Sf4
        • 2.Rxf8#
      • 1...Sh4
        • 2.Rxf8#
      • 1...Se5
        • 2.Rxf8#
      • 1...Sh8
        • 2.Rxf8#
      • 1...Sxe7!
  • Keys
    • 1.Re4!
      • 1...Rxe7
        • 2.Ba4#
      • 1...Sxe7
        • 2.Bh5#
      • 1...Ra7
        • 2.Qxd8#
      • 1...Rb7
        • 2.Qxd8#
      • 1...Rc7
        • 2.Qxd8#
      • 1...Sf4
        • 2.Rxf8#
      • 1...Sh4
        • 2.Rxf8#
      • 1...Se5
        • 2.Rxf8#
      • 1...Sh8
        • 2.Rxf8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(c);N_GUARD::QAR1(G),XS(e)
    • S(b);N_GUARD::R1(H),XB(g)
  • Tries
    • Try
      • B(A);N_PINS(e),P_PINS(b)
      • Threat
        • R1(H),XB(g)
      • Vars
        • R(c);N_GUARD::QAR1(G),XS(e)
      • Refutation
        • R(c);XB(F)
    • Try
      • R(B);
      • Vars
        • R(c);N_GUARD,XB(F)::R1(B),XS(e)
        • R(c);N_GUARD::R1(B),XS(e)
        • S(b);N_GUARD::R1(H),XB(g)
      • Refutation
        • S(b);XB(F)
  • Actual
    • R(B);
    • Vars
      • R(c);OGATEB,P_SPINR(c),XB(F)::B(A)
      • S(b);N_SPINS(e),OGATEB,P_SPINS(b),XB(F)::B(A)
      • R(c);N_GUARD::QAR1(G),XS(e)
      • S(b);N_GUARD::R1(H),XB(g)
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