MESON Chess Problem Database

Problem Display
PID: 263695 (8/8/R7/pkN5/1p1Q4/8/1K6/8 w - - 0 1)

Zimmer, Eligiusz

Zadachi i Etyudi, 2009

8/8/R7/pkN5/1p1Q4/8/1K6/8

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Sb3?
      • 1...Ka4
        • 2.Rxa5#
        • 2.Qd7#
      • 1...a4
        • 2.Rb6#
        • 2.Qd3#
      • 1...Kxa6!
    • 1.Se4?
      • 1...Ka4
        • 2.Sc3#
        • 2.Qd7#
      • 1...a4
        • 2.Qd3#
      • 1...b3
        • 2.Rb6#
      • 1...Kxa6!
    • 1.Se6?
      • 1...Ka4
        • 2.Qd7#
      • 1...a4
        • 2.Sc7#
        • 2.Qd3#
      • 1...b3
        • 2.Sc7#
        • 2.Rb6#
      • 1...Kxa6!
    • 1.Sb7?
      • 1...Ka4
        • 2.Rxa5#
        • 2.Qd7#
      • 1...a4
        • 2.Rb6#
        • 2.Qd3#
      • 1...b3
        • 2.Rb6#
      • 1...Kxa6!
    • 1.Sd7?
      • 1...Kxa6
        • 2.Qb6#
      • 1...a4
        • 2.Qd3#
      • 1...b3
        • 2.Rb6#
      • 1...Ka4!
  • Keys
    • 1.Sa4!
      • 1...Kxa4
        • 2.Qd7#
      • 1...Kxa6
        • 2.Qb6#
      • 1...b3
        • 2.Rb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Refutation
        • K(c);S_FLIGHT,XR(D)
    • Try
      • S(C);
      • Vars
        • P(b);::QAB(B)
        • P(a);::R1(D)
      • Refutation
        • K(c);S_FLIGHT,XR(D)
    • Try
      • S(C);
      • Vars
        • K(c);N_GUARD,P_SPINP(a),S_FLIGHT::QAB(B)
      • Refutation
        • K(c);S_FLIGHT,XR(D)
    • Try
      • S(C);
      • Vars
        • P(a);::R1(D)
      • Refutation
        • K(c);S_FLIGHT,XR(D)
    • Try
      • S(C);
      • Vars
        • K(c);N_GUARD,S_FLIGHT,XR(D)::QAR1(B)
        • P(b);::QAB(B)
        • P(a);::R1(D)
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT
  • Actual
    • S(C);
    • Vars
      • K(c);N_GUARD,P_SPINP(a),S_FLIGHT,XS(C)::QAB(B)
      • K(c);N_GUARD,S_FLIGHT,XR(D)::QAR1(B)
      • P(a);::R1(D)
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