MESON Chess Problem Database

Problem Display
PID: 224652 (8/1p6/4Q3/1pk2n2/3R1P2/3K4/1N6/8 w - - 0 1)

Gudehus, Wilhelm Friedrich Adolf

Charleston Sunday News, 1888

8/1p6/4Q3/1pk2n2/3R1P2/3K4/1N6/8

#2

5 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Se3
      • 2.Qd6#
    • 1...Sg3
      • 2.Qd6#
    • 1...Sh4
      • 2.Qd6#
    • 1...Sd6
      • 2.Qxd6#
    • 1...Sh6
      • 2.Qd6#
    • 1...Se7
      • 2.Qd6#
    • 1...Sg7
      • 2.Qd6#
    • 1...b4
      • 2.Rd5#
    • 1...b6
      • 2.Qd5#
      • 2.Qc8#
  • Tries
    • 1.Kc3?
      • threat
        • 2.Sd3#
        • 2.Rd5#
      • 1...Sxd4
        • 2.Sd3#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Se3
        • 2.Sd3#
        • 2.Qd6#
      • 1...Se7
        • 2.Sd3#
        • 2.Qd6#
      • 1...b4+!
    • 1.Ke4?
      • threat
        • 2.Sd3#
      • 1...Sd6+
        • 2.Qxd6#
      • 1...b4
        • 2.Rd5#
      • 1...Sg3+!
    • 1.Sd1?
      • 1...Sd6
        • 2.Qxd6#
      • 1...b4
        • 2.Rd5#
      • 1...Se3
        • 2.Qd6#
      • 1...Sg3
        • 2.Qd6#
      • 1...Sh4
        • 2.Qd6#
      • 1...Sh6
        • 2.Qd6#
      • 1...Se7
        • 2.Qd6#
      • 1...Sg7
        • 2.Qd6#
      • 1...b6
        • 2.Qd5#
        • 2.Qc8#
      • 1...Sxd4!
  • Keys
    • 1.Kd2!
      • 1...Kxd4
        • 2.Qe5#
      • 1...Sxd4
        • 2.Sd3#
      • 1...Sd6
        • 2.Qxd6#
      • 1...b4
        • 2.Rd5#
      • 1...Se3
        • 2.Qd6#
      • 1...Sg3
        • 2.Qd6#
      • 1...Sh4
        • 2.Qd6#
      • 1...Sh6
        • 2.Qd6#
      • 1...Se7
        • 2.Qd6#
      • 1...Sg7
        • 2.Qd6#
      • 1...b6
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD::QAB1(E)
    • S(c);N_GUARD::QAB1(E),XS(c)
    • P(a);SBLOCK::R1(C)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • S(c);XR(C)::S(A)
        • S(c);N_GUARD::QAB1(E),XS(c)
      • Refutation
        • P(a);CHECK
    • Try
      • K(B);S_FLIGHT
      • Threat
        • S(A)
      • Vars
        • S(c);CHECK,N_GUARD::QAB1(E),XS(c)
        • P(a);SBLOCK::R1(C)
      • Refutation
        • S(c);CHECK
    • Try
      • S(A);
      • Vars
        • S(c);N_GUARD::QAB1(E),XS(c)
        • P(a);SBLOCK::R1(C)
        • S(c);N_GUARD::QAB1(E)
      • Refutation
        • S(c);XR(C)
  • Actual
    • K(B);P-FLIGHT
    • Vars
      • K(b);S_FLIGHT,XR(C)::QAB1(E)
      • S(c);SBLOCK,XR(C)::S(A)
      • S(c);N_GUARD::QAB1(E),XS(c)
      • P(a);SBLOCK::R1(C)
      • S(c);N_GUARD::QAB1(E)
      • P(d);SBLOCK::QAR1(E)
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