MESON Chess Problem Database

Problem Display
PID: 15449 (1q1n4/4B2K/7n/2P1PR2/1RNNk3/1Q2b3/r7/8 w - - 0 1)

Binder, Friedrich

Chlubna, Friedrich

5th Comm., Die Schwalbe, 1984/II

1q1n4/4B2K/7n/2P1PR2/1RNNk3/1Q2b3/r7/8

#2

9 + 6

14730 Problempalette II (Chlubna/Wenda) 1991
4654 64 + 100 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Sb6#
    • 1...Kd5
      • 2.Sd2#
    • 1...Qd6
      • 2.Sxd6#
    • 1...Qa7
      • 2.Sd6#
    • 1...Qb5
      • 2.Sd6#
    • 1...Qb7
      • 2.Sd6#
    • 1...Qa8
      • 2.Sd6#
    • 1...Qc8
      • 2.Sd6#
    • 1...Bxd4
      • 2.Qf3#
  • Tries
    • 1.Sd2+?
      • 1...Bxd2
        • 2.Qf3#
      • 1...Rxd2!
    • 1.Sf3?
      • threat
        • 2.Sd6#
      • 1...Kd5
        • 2.Sa5#
      • 1...Kxf5
        • 2.Sxe3#
      • 1...Sxf5
        • 2.Scd2#
      • 1...Qd6
        • 2.Sxd6#
      • 1...Bd4!
    • 1.Qc2+?
      • 1...Kxd4
        • 2.Sb6#
      • 1...Kd5
        • 2.Sxe3#
      • 1...Rxc2!
    • 1.Qd3+?
      • 1...Kd5
        • 2.Sxe3#
      • 1...Kxd3!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Sd6#
      • 1...Kd5
        • 2.S4a5#
      • 1...Kxf5
        • 2.Sxe3#
      • 1...Sxf5
        • 2.Sd2#
      • 1...Qd6
        • 2.Sxd6#
      • 1...Bd4
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • K(c);P-FLIGHT,XS(D)::R(B)+S(C)
    • K(c);S_FLIGHT::QAB(A)+S(C)
    • Q(e);N_GUARD::S(C),XQ(e)
    • Q(e);N_GUARD,P_PINB(H)::S(C)
    • Q(e);N_GUARD::S(C)
    • B(b);OGATE,SBLOCK,XS(D)::QAB1(A)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • B(b);OGATE,XS(C)::QAB1(A)
      • Refutation
        • R(a);XS(C)
    • Try
      • S(D);
      • Threat
        • R(B)+S(C),DCHECK
      • Vars
        • K(c);S_FLIGHT::QAB(A)+S(C)
        • K(c);S_FLIGHT,XR(G)::S(C),XB(b)
        • S(d);SBLOCK,XR(G)::R(B)+S(C),DCHECK
        • Q(e);::R(B)+S(C),DCHECK,XQ(e)
      • Refutation
        • B(b);
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P-FLIGHT,XS(D)::R(B)+S(C)
        • K(c);S_FLIGHT::S(C),XB(b)
      • Refutation
        • R(a);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);S_FLIGHT::S(C),XB(b)
      • Refutation
        • K(c);S_FLIGHT,XQ(A)
  • Actual
    • S(D);
    • Threat
      • R(B)+S(C),DCHECK
    • Vars
      • K(c);S_FLIGHT::QAB(A)+S(C)
      • K(c);S_FLIGHT,XR(G)::S(C),XB(b)
      • S(d);SBLOCK,XR(G)::R(B)+S(C),DCHECK
      • Q(e);::R(B)+S(C),DCHECK,XQ(e)
      • B(b);OGATE::QAB1(A)
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