MESON Chess Problem Database

Problem Display
PID: 56978 (5N1K/5P2/1p1B1p2/1B1kP2Q/R2P4/3R2N1/1p3r2/5b2 w - - 0 1)

Yaroslavtsev, Arkady Ivanovich

2nd Prize, Shakhmatnaya Moskva, 1967

5N1K/5P2/1p1B1p2/1B1kP2Q/R2P4/3R2N1/1p3r2/5b2

#2

11 + 6

3772 FIDE Album (1965-1967) 1976

SOLUTION

  • SOUND
  • Sets
    • 1...Rc2
      • 2.Qf3#
    • 1...Rd2
      • 2.Qf3#
    • 1...Rg2
      • 2.Qf3#
    • 1...Rf3
      • 2.Qxf3#
    • 1...fxe5
      • 2.Qxe5#
  • Tries
    • 1.Se4?
      • threat
        • 2.Sc3#
      • 1...Kxe4
        • 2.d5#
      • 1...fxe5
        • 2.Qxe5#
      • 1...Rc2
        • 2.Sxf6#
      • 1...b1S!
    • 1.Ba6?
      • threat
        • 2.Bb7#
      • 1...Kc6
        • 2.d5#
      • 1...Rc2
        • 2.Qf3#
      • 1...fxe5!
    • 1.exf6+?
      • 1...Kxd6
        • 2.Qe5#
      • 1...Rf5!
  • Keys
    • 1.Se6!
      • threat
        • 2.Sc7#
      • 1...Kxe6
        • 2.d5#
      • 1...fxe5
        • 2.Qxe5#
      • 1...Rc2
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • R(c);N_GUARD::QAB(G)
    • R(c);N_GUARD::QAB(G),XR(c)
    • P(f);OGATE,P_SPINP(f),XP(F)::QAR1(G),XP(f)
  • Tries
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • K(d);OGATE,S_FLIGHT,XS(B)::R(C)+P(D)
        • P(f);OGATE,P_SPINP(f),XP(F)::QAR1(G),XP(f)
        • R(c);N_GUARD::S(B),XP(f)
      • Refutation
        • P(b);
    • Try
      • B(E);
      • Threat
        • B(E)
      • Vars
        • K(d);OGATE,S_FLIGHT::P(D)
        • R(c);N_GUARD::QAB(G)
      • Refutation
        • P(f);P_SPINP(f),XP(F)
    • Try
      • P(F);CHECK,XP(f)
      • Vars
        • K(d);P-FLIGHT,XB(H)::QAB1(G)
      • Refutation
        • R(c);P_SPINR(c)
  • Actual
    • S(J);
    • Threat
      • S(J)
    • Vars
      • K(d);OGATE,S_FLIGHT,XS(J)::P(D)
      • P(f);OGATE,P_SPINP(f),XP(F)::QAR1(G),XP(f)
      • R(c);N_GUARD::S(J)
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