MESON Chess Problem Database

Problem Display
PID: 11572 (K4Q2/1N1b4/4k3/8/RN4P1/8/1r4r1/B6B w - - 0 1)

Axelrud, Petr

Rukhlis, Efim Naumovich

1st Prize, Pionerskaya pravda, 1939

K4Q2/1N1b4/4k3/8/RN4P1/8/1r4r1/B6B

#2

8 + 4

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

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Sc5#
      • 2.Sd8#
      • 2.Qf6#
    • 1...Ra2
      • 2.Sc5#
      • 2.Sd8#
      • 2.Qf6#
    • 1...Rbc2
      • 2.Sd8#
      • 2.Qf6#
    • 1...Rbd2
      • 2.Sc5#
      • 2.Sd8#
      • 2.Qf6#
    • 1...Rbe2
      • 2.Sc5#
      • 2.Sd8#
      • 2.Qf6#
    • 1...Rbf2
      • 2.Sc5#
      • 2.Sd8#
    • 1...Rb3
      • 2.Sc5#
      • 2.Sd8#
      • 2.Qf6#
  • Tries
    • 1.Qf7+?
      • 1...Ke5
        • 2.Sd3#
      • 1...Kxf7!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Qf5#
      • 1...Kxd5
        • 2.Qd6#
      • 1...Ke5
        • 2.Qd6#
      • 1...Rxb7
        • 2.Sf4#
      • 1...Rxg4
        • 2.Qf6#
      • 1...Rbf2
        • 2.Sc7#
      • 1...Rgf2
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(H);CHECK
      • Vars
        • K(c);P-FLIGHT,P_SPINR(a)::S(D)
      • Refutation
        • K(c);S_FLIGHT,XQ(H)
  • Actual
    • S(D);
    • Threat
      • QAB1(H)
    • Vars
      • K(c);P_SPINR(b),S_FLIGHT,XS(D)::QAR1(H)
      • K(c);P-FLIGHT,P_SPINR(a)::QAB1(H)
      • R(a);XS(F)::S(D)
      • R(b);XP(E)::QAR1(H)
      • R(a);::S(D)
      • R(b);::QAR1(H)
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