MESON Chess Problem Database

Problem Display
PID: 7079 (8/P5N1/8/1p1ppp2/2PPkpP1/2Pppn2/2B4Q/3K4 w - - 0 1)

Joseph, Fernand

Het Belgisch Schaakbord (L'Echiquier Belge), 1998

8/P5N1/8/1p1ppp2/2PPkpP1/2Pppn2/2B4Q/3K4

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...dxc2+
      • 2.Qxc2#
    • 1...e2+
      • 2.Qxe2#
    • 1...dxc4
      • 2.a8Q#
      • 2.a8B#
    • 1...fxg4
      • 2.Qh7#
  • Tries
    • 1.a8Q?
      • threat
        • 2.Qxd5#
      • 1...dxc2+
        • 2.Qxc2#
      • 1...e2+
        • 2.Qxe2#
      • 1...bxc4!
  • Keys
    • 1.Se6!
      • threat
        • 2.Sc5#
      • 1...dxc2+
        • 2.Qxc2#
      • 1...e2+
        • 2.Qxe2#
      • 1...Sxh2
        • 2.Sg5#
      • 1...Sxd4
        • 2.Sg5#
      • 1...dxc4
        • 2.a8Q#
        • 2.a8B#
      • 1...exd4
        • 2.Qxf4#
      • 1...fxg4
        • 2.Qh7#
      • 1...Se1
        • 2.Sg5#
      • 1...Sg1
        • 2.Sg5#
      • 1...Sd2
        • 2.Sg5#
      • 1...Sh4
        • 2.Sg5#
      • 1...Sg5
        • 2.Sxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • P(a);CHECK,N_SPINP(a),OGATE,XB(B)::QAB(C),XP(a)
    • P(b);CHECK,OGATEB::QAR2(C),XP(b)
    • P(g);XP(E)::P=Q
    • P(i);OGATEB,XP(G)::QAB(C)
  • Tries
    • Try
      • P(H);
      • Threat
        • QAB1(H),XP(g)
      • Vars
        • P(a);CHECK,N_SPINP(a),OGATE,P_SPINP(g),XB(B)::QAB(C),XP(a)
        • P(b);CHECK,OGATEB::QAR2(C),XP(b)
      • Refutation
        • P(f);XP(E)
  • Actual
    • S(I);
    • Threat
      • S(I)
    • Vars
      • P(a);CHECK,N_SPINP(a),OGATE,XB(B)::QAB(C),XP(a)
      • P(b);CHECK,OGATEB::QAR2(C),XP(b)
      • S(c);N_GUARD,XQ(C)::S(I)
      • S(c);N_GUARD,XP(F)::S(I)
      • P(g);XP(E)::P=Q
      • P(h);N_GUARD,XP(F)::QAR1(C),XP(e)
      • P(i);OGATEB,XP(G)::QAB(C)
      • S(c);N_GUARD::S(I)
      • S(c);N_GUARD::S(I),XS(c)
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