MESON Chess Problem Database

Problem Display
PID: 31187 (5Q2/8/8/p1R5/rp6/k7/2P4R/7K w - - 0 1)

Trcala, Stanislav

Das neue illustrierte Blatt, 1903

5Q2/8/8/p1R5/rp6/k7/2P4R/7K

#2

5 + 4

3437 Stanislav Trcala Sachovy odkaz 1999

SOLUTION

  • SOUND
  • Tries
    • 1.Qf7?
      • threat
        • 2.Qb3#
      • 1...b3
        • 2.Qxb3#
      • 1...Kb2!
    • 1.Qg8?
      • threat
        • 2.Qb3#
      • 1...b3
        • 2.Qxb3#
      • 1...Kb2!
    • 1.c3?
      • 1...bxc3
        • 2.Rxc3#
      • 1...b3
        • 2.Rxa5#
      • 1...Kb3!
  • Keys
    • 1.c4!
      • 1...Kb3
        • 2.Qf3#
      • 1...bxc4 ep
        • 2.Rxc3#
      • 1...b3
        • 2.Rxa5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);
      • Threat
        • QAR1(E)
      • Vars
        • P(c);::QAR1(E),XP(c)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Threat
        • QAR1(E)
      • Vars
        • P(c);::QAR1(E),XP(c)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(B);
      • Vars
        • P(c);OGATE,XP(B)::QAB(E)+R(D),DCHECK,XP(c)
        • P(c);OGATEB,SBLOCK::QAB(E)+R(D),XP(d)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • P(B);
    • Vars
      • K(a);P-FLIGHT::QAR(E)
      • P(c);EP,OGATE,XP(B)::QAB(E)+R(D),DCHECK,XP(c)
      • P(c);OGATEB,SBLOCK::QAB(E)+R(D),XP(d)
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