MESON Chess Problem Database

Problem Display
PID: 149973 (8/2pPK3/1bR1p3/4k1n1/2PpNpP1/4r3/4Q3/7B w - - 0 1)

Busik, Vladimir

Pravda, 1969

8/2pPK3/1bR1p3/4k1n1/2PpNpP1/4r3/4Q3/7B

#2

8 + 8

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Ba5
      • 2.Rc5#
    • 1...Bc5+
      • 2.Rxc5#
    • 1...Sf3
      • 2.Rxe6#
    • 1...Sh3
      • 2.Rxe6#
    • 1...Sxe4
      • 2.Rxe6#
    • 1...Sf7
      • 2.Rxe6#
    • 1...Sh7
      • 2.Rxe6#
  • Tries
    • 1.Sxg5?
      • threat
        • 2.Sf7#
        • 2.Rxe6#
      • 1...Bc5+
        • 2.Rxc5#
      • 1...f3
        • 2.Qh2#
      • 1...d3!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Sd3#
      • 1...Bxc5+
        • 2.Rxc5#
      • 1...d3
        • 2.Qb2#
      • 1...f3
        • 2.Qh2#
      • 1...Sf3
        • 2.Rxe6#
      • 1...Se4
        • 2.Rxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • B(f);N_GUARD::R(F)
    • B(f);CHECK,N_GUARD::R(F),XB(f)
    • S(e);N_GUARD::R1(F),XP(g)
    • S(e);N_GUARD,XS(D)::R1(F),XP(g)
  • Tries
    • Try
      • S(D);P_PINR(a),XS(e)
      • Threat
        • DUALS(2)
      • Vars
        • B(f);CHECK,N_GUARD::R(F),XB(f)
        • P(c);OGATEB::QAB(B)
      • Refutation
        • P(b);
  • Actual
    • S(D);P_PINR(a)
    • Threat
      • S(D)
    • Vars
      • B(f);CHECK,OGATE,XS(D)::R(F),XB(f)
      • P(b);OGATEB::QAB(B)
      • P(c);OGATEB::QAB(B)
      • S(e);N_GUARD::R1(F),XP(g)
      • S(e);N_GUARD,N_SPINR(a)::R1(F),XP(g)
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