MESON Chess Problem Database

Problem Display
PID: 4555 (8/Q2n1K2/8/2bNkp2/3R4/1P2pP2/8/8 w - - 0 1)

Dobrusky, Jan

Humoristicke listy, 1879

8/Q2n1K2/8/2bNkp2/3R4/1P2pP2/8/8

#2

6 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Qc7#
    • 1...Bd6
      • 2.f4#
  • Tries
    • 1.Se7?
      • threat
        • 2.Sc6#
      • 1...Bxd4
        • 2.Qc7#
      • 1...Bxe7
        • 2.f4#
      • 1...Sb8
        • 2.Qxc5#
      • 1...f4
        • 2.Rd5#
      • 1...Kxd4!
    • 1.f4+?
      • 1...Kd6
        • 2.Qc7#
      • 1...Kxd4!
  • Keys
    • 1.Sb4!
      • threat
        • 2.Sc6#
      • 1...Kxd4
        • 2.Qa1#
      • 1...Bxb4
        • 2.f4#
      • 1...Bxd4
        • 2.Qc7#
      • 1...f4
        • 2.Rd5#
      • 1...Sb8
        • 2.Qxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • K(c);S_FLIGHT::QAB1(E)
    • B(b);SBLOCK::P(B)
  • Tries
    • Try
      • S(D);
      • Threat
        • S(D)
      • Vars
        • B(b);N_GUARD,SBLOCK,XR(C)::QAB(E)
        • B(b);XS(D)::P(B)
        • S(e);N_GUARD::QAR2(E),XB(b)
        • P(d);SBLOCK::R1(C)
      • Refutation
        • K(c);P_SPINB(b),S_FLIGHT,XR(C)
    • Try
      • P(B);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(E)
      • Refutation
        • K(c);P_SPINB(b),S_FLIGHT,XR(C)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • K(c);OGATEB,P_SPINB(b),S_FLIGHT,XR(C)::QAB(E)
      • B(b);XS(D)::P(B)
      • B(b);N_GUARD,SBLOCK,XR(C)::QAB(E)
      • P(d);SBLOCK::R1(C)
      • S(e);N_GUARD::QAR2(E),XB(b)
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