MESON Chess Problem Database

Problem Display
PID: 64830 (B7/1q1p1p2/3p3K/R1r1P1Pp/R3Pk2/4NN1Q/3P2pp/B3n1rb w - - 0 1)

Sushkov, Yuri Akimovich

2nd Prize, Shakhmaty v SSSR, 1980

B7/1q1p1p2/3p3K/R1r1P1Pp/R3Pk2/4NN1Q/3P2pp/B3n1rb

#2

12 + 12

3752 FIDE Album (1980-1982) 1988

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe4
      • 2.Rxe4#
    • 1...Rc6
      • 2.Sd5#
    • 1...h4
      • 2.Qg4#
  • Tries
    • 1.Sxe1?
      • threat
        • 2.Sd3#
        • 2.Qxh2#
        • 2.Qf3#
        • 2.Qh4#
      • 1...Qb2
        • 2.Sd3#
        • 2.Qxh2#
      • 1...Rc4
        • 2.Qf3#
        • 2.Qh4#
      • 1...Qd5
        • 2.Qxh2#
        • 2.Qf3#
        • 2.Qh4#
      • 1...Qa6
        • 2.Qxh2#
        • 2.Qf3#
        • 2.Qh4#
      • 1...Qb1
        • 2.Qxh2#
        • 2.Qf3#
        • 2.Qh4#
      • 1...Qb3
        • 2.Qxh2#
        • 2.Qf3#
        • 2.Qh4#
      • 1...Qb5
        • 2.Qxh2#
        • 2.Qf3#
        • 2.Qh4#
      • 1...Rf1
        • 2.Sd3#
        • 2.Qxh2#
        • 2.Qh4#
      • 1...Rc3
        • 2.Qxh2#
        • 2.Qf3#
        • 2.Qh4#
      • 1...Rd5
        • 2.Qxh2#
        • 2.Qf3#
        • 2.Qh4#
      • 1...h4
        • 2.Sd3#
        • 2.Qg4#
        • 2.Qxh2#
        • 2.Qf3#
        • 2.Qxh4#
      • 1...Rxe1!
    • 1.Sxh2?
      • threat
        • 2.Qh4#
      • 1...Sf3
        • 2.Qxf3#
      • 1...h4
        • 2.Qg4#
        • 2.Qxh4#
      • 1...Qb2!
    • 1.Sh4?
      • threat
        • 2.Qxh2#
      • 1...Sf3
        • 2.Qxf3#
      • 1...Rc4!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Se2#
      • 1...Kxe4
        • 2.Qf5#
      • 1...Kxe5
        • 2.Qf5#
      • 1...Qa6
        • 2.Qxh2#
      • 1...Qb2
        • 2.Qxh2#
      • 1...Qb5
        • 2.Qxh2#
      • 1...Rc4
        • 2.Qh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • Q(j);OGATE,P_SPINQ(j),XP(G)::R1(F),XQ(j)
    • R(g);N_GUARD,S_CUTQ(j)::S(C)
    • P(h);N_GUARD::QAR1(E)
  • Tries
    • Try
      • S(D);XS(a)
      • Threat
        • DUALS(4)
      • Refutation
        • R(b);XS(D)
    • Try
      • S(D);XP(e)
      • Threat
        • QAR2(E)
      • Vars
        • S(a);N_GUARD::QAR1(E),XS(a)
      • Refutation
        • Q(j);
    • Try
      • S(D);
      • Threat
        • QAB(E),XP(e)
      • Vars
        • S(a);N_GUARD::QAR1(E),XS(a)
      • Refutation
        • R(g);
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • K(f);P-FLIGHT,P_SPINQ(j),XP(G)::QAB1(E)
      • K(f);P_SPINR(g),S_FLIGHT,XP(I)::QAR1(E)
      • Q(j);::QAB(E),XP(e)
      • R(g);::QAR2(E)
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