MESON Chess Problem Database

Problem Display
PID: 199443 (8/2p3p1/2qPQ3/2p1P3/N1N1kp1n/5p1K/nB1R1P2/8 w - - 0 1)

Bouchez, Laurent

di Scala, Pascal

Phenix, 1993

8/2p3p1/2qPQ3/2p1P3/N1N1kp1n/5p1K/nB1R1P2/8

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qb7
      • 2.Sxc5#
    • 1...Qd7
      • 2.Sxc5#
    • 1...Qa8
      • 2.Sxc5#
    • 1...Qe8
      • 2.Sxc5#
    • 1...Qa6
      • 2.Sxc5#
    • 1...Qxd6
      • 2.exd6#
    • 1...Sc1
      • 2.Sc3#
    • 1...Sc3
      • 2.Sxc3#
    • 1...Sb4
      • 2.Sc3#
    • 1...Sg2
      • 2.Qg6#
    • 1...Sg6
      • 2.Qxg6#
    • 1...cxd6
      • 2.exd6#
  • Tries
    • 1.Kxh4?
      • threat
        • 2.Qg6#
      • 1...Qxd6
        • 2.exd6#
      • 1...Qd7
        • 2.Sxc5#
      • 1...Qe8
        • 2.Sxc5#
      • 1...g6
        • 2.Qxg6#
      • 1...g5+!
  • Keys
    • 1.Se3!
      • threat
        • 2.Qc4#
      • 1...Qxa4
        • 2.Qd5#
      • 1...Qxd6
        • 2.exd6#
      • 1...fxe3
        • 2.Qg4#
      • 1...Qb5
        • 2.Qd5#
      • 1...Qd5
        • 2.Qxd5#
      • 1...Qd7
        • 2.Sxc5#
      • 1...Qa6
        • 2.Sxc5#
        • 2.Qd5#
      • 1...Sc3
        • 2.Sxc3#
      • 1...Sf5
        • 2.Qxf5#
      • 1...c4
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 9
  • Sets
    • Q(g);N_GUARD::S(E),XP(f)
    • Q(g);N_GUARD,P_PINQ(I)::S(E),XP(f)
    • Q(g);OGATE,XP(H)::QAR(I)+P(G),XQ(g)
    • S(a);N_GUARD::S(E)
    • S(a);N_GUARD::S(E),XS(a)
    • S(e);N_GUARD::QAB(I)
    • S(e);N_GUARD::QAB(I),XS(e)
    • P(h);OGATE,XP(H)::QAR(I)+P(G),XP(h)
  • Tries
    • Try
      • K(D);P-FLIGHT,XS(e)
      • Threat
        • QAB(I)
      • Vars
        • Q(g);OGATE,XP(H)::QAR(I)+P(G),XQ(g)
        • Q(g);N_GUARD::S(E),XP(f)
        • P(i);::QAB(I),XP(i)
      • Refutation
        • P(i);CHECK
  • Actual
    • S(F);
    • Threat
      • QAR2(I)
    • Vars
      • Q(g);N_GUARD,XS(E)::QAB1(I)
      • Q(g);OGATE,XP(H)::QAR(I)+P(G),XQ(g)
      • P(d);OGATEB,XS(F)::QAR2(I)
      • Q(g);N_GUARD::QAB1(I)
      • Q(g);N_GUARD::QAB1(I),XQ(g)
      • Q(g);N_GUARD,P_PINQ(I)::S(E),XP(f)
      • S(a);N_GUARD::S(E),XS(a)
      • S(e);N_GUARD::QAB1(I),XS(e)
      • P(f);N_GUARD::R1(B)
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