MESON Chess Problem Database

Problem Display
PID: 124526 (8/8/4Q3/4K3/8/1N3R2/3pk3/4N3 w - - 0 1)

Rukhlis, Efim Naumovich

Glos Radzecki, 1941

8/8/4Q3/4K3/8/1N3R2/3pk3/4N3

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...d1Q
      • 2.Kf4#
      • 2.Kf5#
      • 2.Kf6#
    • 1...d1B
      • 2.Kd4#
      • 2.Kf4#
      • 2.Kd5#
      • 2.Kf5#
      • 2.Kd6#
      • 2.Kf6#
    • 1...d1R
      • 2.Kf4#
      • 2.Kf5#
      • 2.Kf6#
  • Tries
    • 1.Qc4+?
      • 1...Kxe1
        • 2.Rf1#
        • 2.Qf1#
      • 1...Kd1!
    • 1.Qa6+?
      • 1...Kxe1
        • 2.Rf1#
        • 2.Qf1#
      • 1...Kd1!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Qxd2#
      • 1...Kd1
        • 2.Qxd2#
      • 1...Kxe1
        • 2.Qxd2#
      • 1...dxe1Q
        • 2.Qd3#
      • 1...dxe1S
        • 2.Sc1#
      • 1...dxe1B
        • 2.Sc1#
        • 2.Qd3#
      • 1...dxe1R
        • 2.Qd3#
      • 1...d1Q
        • 2.Qe4#
      • 1...d1S
        • 2.Qd2#
      • 1...d1B
        • 2.Qe4#
        • 2.Qd2#
      • 1...d1R
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(E);
    • Threat
      • QAR1(E),XP(a)
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::QAR1(E),XP(a)
      • K(b);P-FLIGHT,XS(A)::QAB1(E),XP(a)
      • P(a);SBLOCK,XS(A)::QAB1(E)
      • P(a);N_GUARD,SBLOCK,XS(A)::S(B)
      • P(a);SBLOCK::QAR2(E)
      • P(a);::QAR1(E)
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