MESON Chess Problem Database

Problem Display
PID: 180053 (8/8/8/R7/r7/kpQ5/p1n5/n1K5 w - - 0 1)

Palkoska, Emil

Falkirk Herald, 1923

8/8/8/R7/r7/kpQ5/p1n5/n1K5

#2

3 + 6

78 Bulletin Ouvrier des Echecs 1952

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa5
      • 2.Qxa5#
    • 1...Se1
      • 2.Qc5#
    • 1...Se3
      • 2.Qc5#
    • 1...Sb4
      • 2.Qb2#
    • 1...Sd4
      • 2.Qc5#
  • Tries
    • 1.Ra6?
      • 1...Ra5
        • 2.Rxa5#
        • 2.Qxa5#
      • 1...Se1
        • 2.Qc5#
      • 1...Se3
        • 2.Qc5#
      • 1...Sb4
        • 2.Qb2#
      • 1...Sd4
        • 2.Qc5#
      • 1...Rxa6!
    • 1.Ra7?
      • 1...Ra5
        • 2.Rxa5#
        • 2.Qxa5#
      • 1...Ra6
        • 2.Rxa6#
      • 1...Se1
        • 2.Qc5#
      • 1...Se3
        • 2.Qc5#
      • 1...Sb4
        • 2.Qb2#
      • 1...Sd4
        • 2.Qc5#
      • 1...Rxa7!
    • 1.Ra8?
      • 1...Ra5
        • 2.Rxa5#
        • 2.Qxa5#
      • 1...Ra6
        • 2.Rxa6#
      • 1...Ra7
        • 2.Rxa7#
      • 1...Se1
        • 2.Qc5#
      • 1...Se3
        • 2.Qc5#
      • 1...Sb4
        • 2.Qb2#
      • 1...Sd4
        • 2.Qc5#
      • 1...Rxa8!
  • Keys
    • 1.Qe5!
      • 1...b2+
        • 2.Qxb2#
      • 1...Kb4
        • 2.Qc5#
      • 1...Rxa5
        • 2.Qxa5#
      • 1...Se1
        • 2.Qd6#
        • 2.Qc5#
        • 2.Qe7#
      • 1...Se3
        • 2.Qd6#
        • 2.Qc5#
        • 2.Qe7#
      • 1...Sb4
        • 2.Qb2#
      • 1...Sd4
        • 2.Qd6#
        • 2.Qc5#
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(f);N_SPINR(f),OGATE,XR(C)::QAR2(B),XR(f)
    • S(c);N_GUARD::QAB(B)
    • S(c);SBLOCK::QAB1(B)
  • Tries
    • Try
      • R(C);
      • Vars
        • S(c);N_GUARD::QAB(B)
        • S(c);SBLOCK::QAB1(B)
      • Refutation
        • R(f);N_SPINR(f),XR(C)
    • Try
      • R(C);
      • Vars
        • R(f);OGATEB::R(C),XR(f)
        • S(c);N_GUARD::QAB(B)
        • S(c);SBLOCK::QAB1(B)
      • Refutation
        • R(f);N_SPINR(f),XR(C)
    • Try
      • R(C);
      • Vars
        • R(f);OGATEB::R(C),XR(f)
        • S(c);N_GUARD::QAB(B)
        • S(c);SBLOCK::QAB1(B)
      • Refutation
        • R(f);N_SPINR(f),XR(C)
  • Actual
    • Q(B);N_PINP(e)
    • Vars
      • P(e);CHECK::QAB1(B),XP(e)
      • K(d);N_SPINR(f),S_FLIGHT::QAB1(B)
      • R(f);N_SPINR(f),OGATE,XR(C)::QAR2(B),XR(f)
      • S(c);SBLOCK::QAB1(B)
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