MESON Chess Problem Database

Problem Display
PID: 46287 (8/8/2r5/Q7/2k1N3/4p3/2K1N3/8 w - - 0 1)

Zheltonozhko, Vladimir Ivanovich

3rd Prize, Leniskoe plemya, 1987

8/8/2r5/Q7/2k1N3/4p3/2K1N3/8

#2

4 + 3

4883 Still More Fun with Chess Miniatures 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Qxc5#
    • 1...Ra6
      • 2.Qc5#
    • 1...Rb6
      • 2.Qc5#
    • 1...Rd6
      • 2.Sxd6#
      • 2.Qc5#
    • 1...Re6
      • 2.Qc5#
    • 1...Rf6
      • 2.Qc5#
    • 1...Rg6
      • 2.Qc5#
    • 1...Rh6
      • 2.Qc5#
    • 1...Rc7
      • 2.Sd6#
    • 1...Rc8
      • 2.Sd6#
  • Tries
    • 1.Sf4?
      • threat
        • 2.Qa4#
      • 1...Ra6
        • 2.Qc5#
      • 1...Rb6
        • 2.Qc5#
      • 1...Kd4+!
    • 1.S4c3?
      • threat
        • 2.Qb5#
      • 1...Rc5
        • 2.Qa4#
      • 1...Rb6!
  • Keys
    • 1.S2c3!
      • threat
        • 2.Qa4#
      • 1...Kd4
        • 2.Qd5#
      • 1...Ra6
        • 2.Qc5#
      • 1...Rb6
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • R(c);N_GUARD::QAR1(D),XR(c)
    • R(c);N_GUARD::QAR1(D)
    • R(c);N_GUARD::S(C)
  • Tries
    • Try
      • S(B);
      • Threat
        • QAR2(D)
      • Vars
        • R(c);N_GUARD::QAR1(D)
      • Refutation
        • K(b);CHECK,P-FLIGHT
    • Try
      • S(C);
      • Threat
        • QAB1(D)
      • Vars
        • R(c);SBLOCK::QAR2(D)
      • Refutation
        • R(c);
  • Actual
    • S(B);
    • Threat
      • QAR2(D)
    • Vars
      • K(b);P-FLIGHT,P_PINS(B)::QAR1(D)
      • R(c);N_GUARD::QAR1(D)
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