MESON Chess Problem Database

Problem Display
PID: 43352 (4B2K/8/2P2P2/R1n1k3/7P/1Q2pR2/1N2N2P/6B1 w - - 0 1)

Stojnic, Dragan

2nd HM., The Problemist, 2002/I

4B2K/8/2P2P2/R1n1k3/7P/1Q2pR2/1N2N2P/6B1

#2

12 + 3

56 The Problemist 2006

SOLUTION

  • SOUND
  • Tries
    • 1.Sd3+?
      • 1...Ke4
        • 2.Rf4#
      • 1...Kd6!
    • 1.Bxe3?
      • 1...Kd6
        • 2.Bf4#
      • 1...Ke4!
    • 1.Bd7?
      • threat
        • 2.Qe6#
      • 1...Ke4
        • 2.Rxe3#
      • 1...Kd6!
    • 1.Bf7?
      • threat
        • 2.Qd5#
        • 2.Qe6#
      • 1...Ke4
        • 2.Qd5#
        • 2.Qxe3#
      • 1...Kd6!
    • 1.Rxe3+?
      • 1...Kf5
        • 2.Qe6#
      • 1...Kxf6
        • 2.Qf7#
      • 1...Kd6!
    • 1.Rxc5+?
      • 1...Ke4
        • 2.Rxe3#
        • 2.Rf4#
        • 2.Qd5#
        • 2.Qxe3#
      • 1...Kd6!
    • 1.Qf7?
      • 1...Kd6
        • 2.Sc4#
      • 1...Ke4!
    • 1.h3?
      • 1...Kd6
        • 2.Bh2#
      • 1...Ke4!
  • Keys
    • 1.Sf4!
      • 1...Kd4
        • 2.Qxe3#
      • 1...Ke4
        • 2.Qd5#
      • 1...Kf5
        • 2.Qe6#
      • 1...Kd6
        • 2.Qb8#
      • 1...Kxf6
        • 2.Sg6#
      • 1...e2
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(c);N_SPINS(b),P-FLIGHT::R1(F)
      • Refutation
        • K(c);N_SPINS(b),S_FLIGHT
    • Try
      • B(A);XP(a)
      • Vars
        • K(c);N_SPINS(b),S_FLIGHT::B(A)
      • Refutation
        • K(c);N_SPINS(b),P-FLIGHT
    • Try
      • B(K);
      • Threat
        • QAR1(E)
      • Vars
        • K(c);N_SPINS(b),P-FLIGHT::R1(F),XP(a)
      • Refutation
        • K(c);N_SPINS(b),S_FLIGHT
    • Try
      • B(K);
      • Threat
        • DUALS(2)
      • Refutation
        • K(c);N_SPINS(b),S_FLIGHT
    • Try
      • R(F);CHECK,XP(a)
      • Vars
        • K(c);P-FLIGHT::QAB1(E)
        • K(c);N_SPINS(b),S_FLIGHT,XP(J)::QAR1(E)
      • Refutation
        • K(c);N_SPINS(b),S_FLIGHT
    • Try
      • R(H);CHECK,XS(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(c);N_SPINS(b),S_FLIGHT::S(B)
      • Refutation
        • K(c);N_SPINS(b),P-FLIGHT
    • Try
      • P(D);
      • Vars
        • K(c);N_SPINS(b),S_FLIGHT::B(A)
      • Refutation
        • K(c);N_SPINS(b),P-FLIGHT
  • Actual
    • S(C);
    • Vars
      • K(c);N_SPINS(b),P_SPINP(a),S_FLIGHT::QAB1(E),XP(a)
      • K(c);N_SPINS(b),P-FLIGHT::QAB1(E)
      • K(c);P-FLIGHT::QAB1(E)
      • K(c);N_SPINS(b),S_FLIGHT::QAB(E)
      • K(c);N_SPINS(b),S_FLIGHT,XP(J)::R(F)+S(C)
      • P(a);::QAR1(E)
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