MESON Chess Problem Database

Problem Display
PID: 157297 (3N2Q1/5Nb1/RP1p1B2/2knnR2/Pp6/1KPpr3/8/7b w - - 0 1)

Petite, Efren

Arbejder-Skak, 1954

3N2Q1/5Nb1/RP1p1B2/2knnR2/Pp6/1KPpr3/8/7b

#2

10 + 9

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Sxb6
      • 2.Ra5#
    • 1...Sf3
      • 2.cxb4#
    • 1...Sc4
      • 2.cxb4#
    • 1...Sg4
      • 2.cxb4#
    • 1...Sc6
      • 2.Sb7#
    • 1...Sg6
      • 2.cxb4#
    • 1...Sd7
      • 2.cxb4#
    • 1...Sxf7
      • 2.cxb4#
  • Keys
    • 1.Sg5!
      • threat
        • 2.Sge6#
      • 1...Sxc3
        • 2.Qc4#
      • 1...Sxb6
        • 2.Ra5#
      • 1...Sxf6
        • 2.Qc4#
      • 1...Sf4
        • 2.Qc4#
      • 1...Sc7
        • 2.Qc4#
      • 1...Se7
        • 2.Qc4#
      • 1...Sf3
        • 2.Rxd5#
        • 2.Qxd5#
        • 2.cxb4#
      • 1...Sc4
        • 2.cxb4#
      • 1...Sg4
        • 2.cxb4#
      • 1...Sc6
        • 2.Sb7#
      • 1...Sg6
        • 2.cxb4#
      • 1...Sd7
        • 2.cxb4#
      • 1...Sf7
        • 2.cxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • S(f);P_SPINS(g),SBLOCK,XP(F)::R(E)
    • S(g);P_SPINS(f)::P(B),XP(d)
    • S(g);P_SPINS(f),SBLOCK::S(I)
    • S(g);P_SPINS(f),XS(H)::P(B),XP(d)
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • S(f);OGATE,P_SPINS(g),XP(B)::QAR1(J)
      • S(f);P_SPINS(g),SBLOCK,XP(F)::R(E)
      • S(f);OGATE,P_SPINS(g),XB(G)::QAR1(J)
      • S(f);OGATE,P_SPINS(g)::QAR1(J)
      • S(g);P_SPINS(f)::P(B),XP(d)
      • S(g);P_SPINS(f),SBLOCK::S(I)
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