MESON Chess Problem Database

Problem Display
PID: 81196 (2nQ2R1/7K/b1B1pp1p/5k1p/Rb3N1p/4p2N/p5PB/8 w - - 0 1)

Boyer, Jean-Pierre

Probleemblad, 1981

2nQ2R1/7K/b1B1pp1p/5k1p/Rb3N1p/4p2N/p5PB/8

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...e5
      • 2.Qd7#
  • Tries
    • 1.Sd5?
      • threat
        • 2.Sxe3#
      • 1...Ke4
        • 2.Se7#
      • 1...exd5
        • 2.Qxd5#
      • 1...Bd2
        • 2.Qxf6#
      • 1...Bc5
        • 2.Qxf6#
      • 1...e2
        • 2.Se3#
      • 1...e5!
    • 1.Qd3+?
      • 1...Ke5
        • 2.Se2#
        • 2.Sd5#
        • 2.Sxh5#
        • 2.Sg6#
      • 1...Bxd3!
    • 1.Qd5+?
      • 1...e5
        • 2.Bd7#
        • 2.Qe4#
        • 2.Qe6#
        • 2.Qd7#
      • 1...exd5!
    • 1.Qe8?
      • threat
        • 2.Qxh5#
        • 2.Qxe6#
      • 1...Be7
        • 2.Qxh5#
      • 1...Be2
        • 2.Qxe6#
      • 1...Bc4
        • 2.Qxh5#
      • 1...Se7
        • 2.Qxh5#
      • 1...e5
        • 2.Qxh5#
        • 2.Qg6#
        • 2.Qd7#
        • 2.Qe6#
      • 1...Ke5!
  • Keys
    • 1.Sg6!
      • threat
        • 2.Sxh4#
      • 1...Kg4
        • 2.Se7#
      • 1...e5
        • 2.Qd7#
      • 1...Be1
        • 2.Rf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(h);OGATEB,SBLOCK::QAB(H)
  • Tries
    • Try
      • S(E);
      • Threat
        • S(E),XP(b)
      • Vars
        • K(e);P_SPINB(c),S_FLIGHT::B(F)+S(E)
        • P(h);OGATE,XS(E)::QAR2(H),XP(h)
        • B(c);::QAR1(H),XP(i)
        • P(b);::S(E)
      • Refutation
        • P(h);
    • Try
      • Q(H);CHECK
      • Refutation
        • B(g);XQ(H)
    • Try
      • Q(H);CHECK
      • Refutation
        • P(h);XQ(H)
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • B(c);::QAR2(H),XP(f)
        • B(g);::QAB1(H),XP(h)
        • B(g);::QAR2(H),XP(f)
        • S(k);::QAR2(H),XP(f)
      • Refutation
        • K(e);P-FLIGHT,P_SPINP(h)
  • Actual
    • S(E);
    • Threat
      • S(E),XP(d)
    • Vars
      • K(e);P_SPINB(c),S_FLIGHT::R(I)+S(E)
      • P(h);OGATEB::QAB(H)
      • B(c);OGATE::R1(D)
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