MESON Chess Problem Database

Problem Display
PID: 166413 (b1B5/B7/4R3/2Nkp3/2pP1PK1/1nn1r1p1/2N1P3/1r2b3 w - - 0 1)

Petite, Efren

Finnish Problemist's Association, 1954

b1B5/B7/4R3/2Nkp3/2pP1PK1/1nn1r1p1/2N1P3/1r2b3

#2

9 + 10

15148 Sadier Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bb7
      • 2.Bxb7#
    • 1...Sxd4
      • 2.Sxe3#
    • 1...exd4
      • 2.Sb4#
  • Tries
    • 1.Sd7?
      • threat
        • 2.Sf6#
      • 1...Ke4
        • 2.Sf6#
        • 2.Rxe5#
      • 1...Se4
        • 2.Sb6#
      • 1...Kxe6!
  • Keys
    • 1.Se4!
      • threat
        • 2.Sf6#
      • 1...Kxe4
        • 2.Rxe5#
      • 1...Rxe4
        • 2.Sb4#
      • 1...Sxe4
        • 2.Sxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • B(j);N_GUARD::B(I),XB(j)
    • S(c);SBLOCK,XP(C)::S(A),XR(e)
    • P(i);SBLOCK,XP(C)::S(A)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • S(d);SBLOCK::S(F)
      • Refutation
        • K(h);S_FLIGHT,XR(G)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • K(h);P_SPINP(i),S_FLIGHT,XS(F)::R1(G),XP(i)
      • R(e);P_PINP(D),SBLOCK,XS(F)::S(A)
      • S(d);SBLOCK,XS(F)::S(A),XR(e)
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