MESON Chess Problem Database

Problem Display
PID: 55907 (4BBr1/p3n2r/K2N1P2/nQPk2p1/1bp3R1/8/4R3/8 w - - 0 1)

Kisis, Imants J

Comm., Troll, 1993-1994

4BBr1/p3n2r/K2N1P2/nQPk2p1/1bp3R1/8/4R3/8

#2

9 + 9

6113 Problemschach-Jahrbuch (1993) 1994

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Bf7#
    • 1...Rh2
      • 2.Bf7#
    • 1...Rh3
      • 2.Bf7#
    • 1...Rh4
      • 2.Bf7#
    • 1...Rh5
      • 2.Bf7#
    • 1...Rh6
      • 2.Bf7#
    • 1...Rf7
      • 2.Bxf7#
    • 1...Rhh8
      • 2.Bf7#
    • 1...Sb3
      • 2.Qxc4#
    • 1...Sac6
      • 2.Qxc4#
    • 1...Sb7
      • 2.Qxc4#
  • Tries
    • 1.Sf7?
      • threat
        • 2.Re5#
      • 1...Rxf7
        • 2.Bxf7#
      • 1...Bc3
        • 2.c6#
      • 1...Sac6
        • 2.Qxc4#
      • 1...Sg6
        • 2.Qd7#
      • 1...Sec6!
    • 1.Bc6+?
      • 1...Saxc6
        • 2.Qxc4#
      • 1...Sexc6!
    • 1.c6+?
      • 1...Kxd6
        • 2.Qe5#
      • 1...Bc5!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Sb7#
      • 1...Kxc5
        • 2.Se4#
      • 1...Bxc5
        • 2.Qe6#
      • 1...Sec6
        • 2.Sf7#
      • 1...Sb7
        • 2.Sxb7#
      • 1...Sf5
        • 2.Qxf5#
      • 1...Sg6
        • 2.Sf7#
      • 1...Sc8
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 10
  • Sets
    • R(h);N_GUARD::B(H)
    • R(h);N_GUARD::B(H),XR(h)
    • S(c);N_GUARD::QAB1(C),XP(b)
  • Tries
    • Try
      • S(F);
      • Threat
        • R1(A)
      • Vars
        • R(h);OGATE,XS(F)::B(H),XR(h)
        • B(a);N_GUARD::QAR(C)+P(D)
        • S(c);N_GUARD::QAB1(C),XP(b)
        • S(g);::QAR2(C)
      • Refutation
        • S(g);
    • Try
      • B(H);CHECK
      • Vars
        • S(c);SBLOCK,XB(H)::QAB1(C),XP(b)
      • Refutation
        • S(g);XB(H)
    • Try
      • P(D);CHECK
      • Vars
        • K(d);OGATE,P-FLIGHT,P_SPINS(g),XS(F)::QAB1(C)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • Q(C);
    • Threat
      • QAR(C)+S(F)
    • Vars
      • K(d);P-FLIGHT,XP(D)::S(F)
      • B(a);SBLOCK,XP(D)::QAB1(C)
      • S(g);::QAR(C)+S(F)
      • S(c);::QAR(C)+S(F),XS(c)
      • S(g);N_GUARD::QAR2(C),XS(g)
      • S(g);N_GUARD::QAR2(C)
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