MESON Chess Problem Database

Problem Display
PID: 187938 (K5Q1/8/4R3/3k4/2p3P1/B1p2n2/5n2/8 w - - 0 1)

Kotrc, Jan

Pesti Hirlap, 1910

K5Q1/8/4R3/3k4/2p3P1/B1p2n2/5n2/8

#2

5 + 5

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qd8#
  • Tries
    • 1.Re1+?
      • 1...Kd4
        • 2.Qd8#
      • 1...Kc6!
    • 1.Re2+?
      • 1...Kd4
        • 2.Qd8#
      • 1...Kc6!
    • 1.Re7+?
      • 1...Kd4
        • 2.Qd8#
      • 1...Kc6!
    • 1.Qg5+?
      • 1...Kd4
        • 2.Qd8#
      • 1...Kxe6
        • 2.Qf5#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sxg5!
  • Keys
    • 1.Qh7!
      • threat
        • 2.Qd7#
      • 1...Kd4
        • 2.Qd7#
      • 1...Kxe6
        • 2.Qf5#
      • 1...Se4
        • 2.Qxe4#
      • 1...Se5
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(e);P-FLIGHT::QAR(E)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR(E)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR(E)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR(E)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR(E)
        • K(e);S_FLIGHT,XR(C)::QAB1(E)
        • S(c);N_GUARD,P_SPINS(c)::QAR1(E),XS(c)
      • Refutation
        • S(c);XQ(E)
  • Actual
    • Q(E);
    • Threat
      • QAR2(E)
    • Vars
      • K(e);P-FLIGHT::QAR(E)
      • K(e);S_FLIGHT,XR(C)::QAB1(E)
      • S(a);N_GUARD::QAB1(E),XS(a)
      • S(c);SBLOCK::R1(C)
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Developed and maintained by Brian Stephenson.
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