MESON Chess Problem Database

Problem Display
PID: 121517 (1Q6/6B1/8/1K6/3PPR2/4k3/3p3P/3Bn3 w - - 0 1)

Kotrc, Jan

Delnicke listy, 1910

1Q6/6B1/8/1K6/3PPR2/4k3/3p3P/3Bn3

#2

8 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rf3+?
      • 1...Kxe4
        • 2.Qe5#
        • 2.Qb7#
        • 2.Qa8#
      • 1...Sxf3!
    • 1.Qe5?
      • 1...Sf3
        • 2.Rxf3#
      • 1...Sc2
        • 2.Rf3#
      • 1...Sg2
        • 2.Rf3#
      • 1...Sd3
        • 2.Rf3#
      • 1...Kd3!
    • 1.Qb7?
      • 1...Kxf4
        • 2.Bh6#
      • 1...Sf3
        • 2.Rxf3#
      • 1...Sc2
        • 2.Rf3#
      • 1...Sg2
        • 2.Rf3#
      • 1...Sd3
        • 2.Rf3#
      • 1...Kd3!
    • 1.Qe8?
      • 1...Kxf4
        • 2.Bh6#
      • 1...Sf3
        • 2.Rxf3#
      • 1...Sc2
        • 2.Rf3#
      • 1...Sg2
        • 2.Rf3#
      • 1...Sd3
        • 2.Rf3#
      • 1...Kd3!
  • Keys
    • 1.Qa8!
      • 1...Kd3
        • 2.Qa3#
      • 1...Kxf4
        • 2.Bh6#
      • 1...Sf3
        • 2.Rxf3#
      • 1...Sc2
        • 2.Rf3#
      • 1...Sg2
        • 2.Rf3#
      • 1...Sd3
        • 2.Rf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);CHECK
      • Refutation
        • S(a);XR(E)
    • Try
      • Q(H);
      • Vars
        • S(a);N_GUARD::R1(E),XS(a)
        • S(a);N_GUARD::R1(E)
        • S(a);N_GUARD,SBLOCK::R1(E)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(H);
      • Vars
        • K(c);OGATEB,S_FLIGHT,XR(E)::B(G)
        • S(a);N_GUARD::R1(E),XS(a)
        • S(a);N_GUARD::R1(E)
        • S(a);N_GUARD,SBLOCK::R1(E)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(H);
      • Vars
        • K(c);OGATEB,S_FLIGHT,XR(E)::B(G)
        • S(a);N_GUARD::R1(E),XS(a)
        • S(a);N_GUARD::R1(E)
        • S(a);N_GUARD,SBLOCK::R1(E)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(H);
    • Vars
      • K(c);P-FLIGHT::QAR(H)
      • K(c);OGATEB,S_FLIGHT,XR(E)::B(G)
      • S(a);N_GUARD::R1(E),XS(a)
      • S(a);N_GUARD::R1(E)
      • S(a);N_GUARD,SBLOCK::R1(E)
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