MESON Chess Problem Database

Problem Display
PID: 6505 (8/4Q3/8/K7/1N2p3/6n1/1R1b1R1N/3bk1B1 w - - 0 1)

Rybakov, Vassily

3rd Prize, Zadachi i Etyudi, 1929

8/4Q3/8/K7/1N2p3/6n1/1R1b1R1N/3bk1B1

#2

7 + 5

3098 FIDE Album (1914-1944) (I) 1971
3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Sd3#
    • 1...Bxb4+
      • 2.Qxb4#
    • 1...Bf4
      • 2.Sd3#
    • 1...Bg5
      • 2.Sd3#
    • 1...Bh6
      • 2.Sd3#
    • 1...Se2
      • 2.Rf1#
  • Keys
    • 1.Rb1!
      • threat
        • 2.Sf3#
      • 1...Bxb4+
        • 2.Qxb4#
      • 1...Bc1
        • 2.Sd3#
      • 1...Be3
        • 2.Sc2#
      • 1...Se2
        • 2.Rf1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • B(c);N_PINS(E)::S(E)
    • B(c);CHECK,OGATE,XS(E)::QAB(G),XB(c)
    • S(d);N_GUARD,N_SPINP(e),SBLOCK::R1(C)
  • Actual
    • R(B);P_PINB(a)
    • Threat
      • S(D)
    • Vars
      • B(c);CHECK,OGATE,XS(E)::QAB(G),XB(c)
      • B(c);N_PINS(E),N_SPINB(a)::S(E)
      • B(c);N_PINS(E),N_SPINP(e)::S(E)
      • S(d);N_GUARD,N_SPINP(e),SBLOCK::R1(C)
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