MESON Chess Problem Database

Problem Display
PID: 152245 (3n4/1nrP4/3b1Q2/Ppk1p2R/bN1N1P2/3P4/4p2K/4B3 w - - 0 1)

Black Pawn

Pen & Pencil, 1888

(First published on Sat Jul 14 1888)

3n4/1nrP4/3b1Q2/Ppk1p2R/bN1N1P2/3P4/4p2K/4B3

#2

10 + 9

15239 Valois Notebooks 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Bb3
      • 2.Sxb3#
    • 1...Be7
      • 2.Qxe5#
      • 2.Qb6#
    • 1...Bf8
      • 2.Qxe5#
      • 2.Qb6#
    • 1...Sc6
      • 2.Se6#
    • 1...Se6
      • 2.Sxe6#
    • 1...Sf7
      • 2.Se6#
  • Tries
    • 1.Rxe5+?
      • 1...Bxe5
        • 2.Qxe5#
        • 2.Qb6#
      • 1...Kxd4!
  • Keys
    • 1.fxe5!
      • threat
        • 2.exd6#
      • 1...Bxe5+
        • 2.Qxe5#
      • 1...Kxd4
        • 2.Qf2#
      • 1...Sxa5
        • 2.Qxd6#
      • 1...Bb3
        • 2.Sxb3#
      • 1...Be7
        • 2.Qb6#
      • 1...Bf8
        • 2.Qb6#
      • 1...Sc6
        • 2.Se6#
      • 1...Se6
        • 2.Sxe6#
      • 1...Sf7
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(b);N_GUARD::S(E),XB(b)
    • S(i);N_GUARD::S(E)
    • S(i);N_GUARD::S(E),XS(i)
  • Tries
    • Try
      • R(H);CHECK,XP(e)
      • Refutation
        • K(d);S_FLIGHT,XS(E)
  • Actual
    • P(F);P_SPINP(F),XP(e)
    • Threat
      • R(H)+P(F),XB(f)
    • Vars
      • B(f);CHECK,OGATE,P_SPINB(f),XP(F)::QAR2(I),XB(f)
      • K(d);OGATEB,S_FLIGHT,XS(E)::QAB(I)
      • S(g);N_GUARD,XP(G)::QAB1(I),XB(f)
      • B(b);N_GUARD::S(E),XB(b)
      • B(f);N_PINP(F),OGATE::QAB1(I)
      • S(i);N_GUARD::S(E)
      • S(i);N_GUARD::S(E),XS(i)
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