MESON Chess Problem Database

Problem Display
PID: 43887 (b2N2Bn/K2Q1r1q/3p1p2/3k4/1pR3N1/1p1p4/3P4/8 w - - 0 1)

de Szugyi, J

De Problemist, 1930

b2N2Bn/K2Q1r1q/3p1p2/3k4/1pR3N1/1p1p4/3P4/8

#2

7 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bb7
      • 2.Qb5#
      • 2.Qe6#
  • Tries
    • 1.Kb6?
      • threat
        • 2.Qb5#
        • 2.Qe6#
      • 1...Qe4
        • 2.Qb5#
      • 1...Qf5
        • 2.Qb5#
      • 1...Bc6
        • 2.Qxc6#
        • 2.Qe6#
      • 1...Kxc4!
    • 1.Kxa8?
      • threat
        • 2.Qb5#
        • 2.Qc6#
        • 2.Qe6#
      • 1...Qe4
        • 2.Qb5#
        • 2.Qc6#
      • 1...Qf5
        • 2.Qb5#
        • 2.Qc6#
      • 1...Kxc4!
    • 1.Kb8?
      • threat
        • 2.Qb5#
        • 2.Qe6#
      • 1...Qe4
        • 2.Qb5#
      • 1...Qf5
        • 2.Qb5#
      • 1...Bc6
        • 2.Qxc6#
        • 2.Qe6#
      • 1...Kxc4!
    • 1.Bxf7+?
      • 1...Sxf7
        • 2.Qb5#
        • 2.Qe6#
      • 1...Qxf7!
    • 1.Rd4+?
      • 1...Kc5
        • 2.Se6#
      • 1...Kxd4!
  • Keys
    • 1.Se6!
      • threat
        • 2.Rd4#
      • 1...Rxd7+
        • 2.Sc7#
      • 1...Kxc4
        • 2.Se3#
      • 1...Qe4
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);N_SPINQ(E),S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • Q(h);::QAR2(E)
      • Refutation
        • K(d);N_SPINP(e),S_FLIGHT,XR(B)
    • Try
      • K(D);N_SPINQ(E),P-FLIGHT,XB(i)
      • Threat
        • DUALS(3)
      • Refutation
        • K(d);N_SPINP(e),S_FLIGHT,XR(B)
    • Try
      • K(D);N_SPINQ(E),S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • Q(h);::QAR2(E)
      • Refutation
        • K(d);N_SPINP(e),S_FLIGHT,XR(B)
    • Try
      • B(G);CHECK,N_SPINQ(E),XR(g)
      • Refutation
        • Q(h);P_PINQ(E),XB(G)
    • Try
      • R(B);CHECK
      • Vars
        • K(d);N_SPINP(e),N_SPINR(g),P-FLIGHT::S(F)
      • Refutation
        • K(d);N_SPINR(g),P-FLIGHT,XR(B)
  • Actual
    • S(F);N_PINR(g)
    • Threat
      • R1(B)
    • Vars
      • R(g);CHECK,N_SPINP(e),XQ(E)::B(G)+S(F),DCHECK
      • K(d);N_SPINP(e),S_FLIGHT,XR(B)::S(C)
      • Q(h);SBLOCK::R1(B)
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