MESON Chess Problem Database

Problem Display
PID: 63393 (n1Q5/3P1p2/2n1Prp1/1RN2kPp/2P1b3/3Bp1pK/4NB2/5R2 w - - 0 1)

Kapralos, Demetrius N

3rd HM., Banska Bystrica (BABY) TT, 1958

n1Q5/3P1p2/2n1Prp1/1RN2kPp/2P1b3/3Bp1pK/4NB2/5R2

#2

12 + 10

SOLUTION

  • SOUND
  • Tries
    • 1.Sb3+?
      • 1...Kxe6
        • 2.d8Q#
      • 1...Se5!
    • 1.Sa4+?
      • 1...Kxe6
        • 2.d8Q#
      • 1...Se5!
    • 1.Sxe4+?
      • 1...Kxe6
        • 2.d8Q#
        • 2.d8B#
      • 1...Se5!
    • 1.Sa6+?
      • 1...Kxe6
        • 2.d8Q#
      • 1...Se5!
    • 1.Sb7+?
      • 1...Kxe6
        • 2.d8Q#
        • 2.d8B#
      • 1...Se5!
    • 1.d8Q?
      • threat
        • 2.Qxf6#
      • 1...Ke5
        • 2.Sxe4#
      • 1...Kxg5
        • 2.Bxe3#
      • 1...Rxe6
        • 2.Bxg3#
        • 2.Qf6#
      • 1...Sxd8
        • 2.Sb3#
        • 2.Sa4#
        • 2.Sxe4#
        • 2.Sa6#
        • 2.Sb7#
      • 1...Se7!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Qxf6#
      • 1...Ke5
        • 2.Bxg3#
      • 1...Kxg5
        • 2.Sxe4#
      • 1...Rxe6
        • 2.Bxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • K(d);N_SPINB(c),S_FLIGHT,XP(J)::P=Q
      • Refutation
        • S(f);P_SPINS(f)
    • Try
      • S(H);CHECK
      • Vars
        • K(d);N_SPINB(c),S_FLIGHT,XP(J)::P=Q
      • Refutation
        • S(f);P_SPINS(f)
    • Try
      • S(H);CHECK,XB(c)
      • Vars
        • K(d);S_FLIGHT,XP(J)::P=Q
      • Refutation
        • S(f);P_SPINS(f)
    • Try
      • S(H);CHECK
      • Vars
        • K(d);N_SPINB(c),S_FLIGHT,XP(J)::P=Q
      • Refutation
        • S(f);P_SPINS(f)
    • Try
      • S(H);CHECK
      • Vars
        • K(d);N_SPINB(c),S_FLIGHT,XP(J)::P=Q
      • Refutation
        • S(f);P_SPINS(f)
    • Try
      • P(K);
      • Threat
        • QAR1(K),XR(g)
      • Vars
        • K(d);N_SPINB(c),P-FLIGHT::R(G)+S(H),XB(c)
        • K(d);N_SPINB(c),P-FLIGHT,P_SPINR(g),XP(I)::B(C),XP(a)
      • Refutation
        • S(f);
  • Actual
    • Q(L);
    • Threat
      • QAR1(L),XR(g)
    • Vars
      • K(d);N_SPINB(c),P-FLIGHT,P_SPINR(g)::B(C),XP(b)
      • K(d);N_SPINB(c),P-FLIGHT,XP(I)::R(G)+S(H),DCHECK,XB(c)
      • R(g);XP(J)::R(A)+B(C),XP(a)
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