MESON Chess Problem Database

Problem Display
PID: 41183 (B3r3/8/2R3p1/2BR1pK1/4kNQ1/q6p/1r4b1/7N w - - 0 1)

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

1/2 Prize, Schach, 1983

B3r3/8/2R3p1/2BR1pK1/4kNQ1/q6p/1r4b1/7N

#2

8 + 8

3748 FIDE Album (1983-1985) 1992

SOLUTION

  • SOUND
  • Sets
    • 1...Qb4
      • 2.Sg3#
    • 1...Qa1
      • 2.Sg3#
    • 1...Qa2
      • 2.Sg3#
    • 1...Qg3
      • 2.Sxg3#
    • 1...Qa4
      • 2.Sg3#
    • 1...Qa5
      • 2.Sg3#
    • 1...Qa6
      • 2.Sg3#
    • 1...Qa7
      • 2.Sg3#
    • 1...Qxa8
      • 2.Sg3#
    • 1...Rb1
      • 2.Sf2#
    • 1...Rf2
      • 2.Sxf2#
    • 1...Rb3
      • 2.Sf2#
    • 1...Rb4
      • 2.Sf2#
    • 1...Rb5
      • 2.Sf2#
    • 1...Rb6
      • 2.Sf2#
    • 1...Rb7
      • 2.Sf2#
    • 1...Rbb8
      • 2.Sf2#
    • 1...Re6
      • 2.Rxe6#
    • 1...Rxa8
      • 2.Re6#
    • 1...Reb8
      • 2.Re6#
    • 1...Rc8
      • 2.Re6#
    • 1...Rd8
      • 2.Re6#
    • 1...Rf8
      • 2.Re6#
    • 1...Rg8
      • 2.Re6#
    • 1...Rh8
      • 2.Re6#
    • 1...Bf3
      • 2.Sg3#
  • Tries
    • 1.Sh5+?
      • 1...Kxd5
        • 2.Qd4#
      • 1...f4
        • 2.Sf6#
      • 1...fxg4!
    • 1.Rd2?
      • threat
        • 2.Re6#
      • 1...Ke5
        • 2.Sxg6#
      • 1...Qxa8
        • 2.Qe2#
      • 1...Re5
        • 2.Sf2#
      • 1...Re6
        • 2.Rxe6#
      • 1...Rb7!
    • 1.Rd4+?
      • 1...Ke5
        • 2.Sxg6#
      • 1...Ke3!
    • 1.Qe2+?
      • 1...Qe3
        • 2.Sf2#
        • 2.Sg3#
        • 2.Qxe3#
      • 1...Rxe2!
  • Keys
    • 1.Rd3!
      • threat
        • 2.Re6#
      • 1...Ke5
        • 2.Sxg6#
      • 1...Qxa8
        • 2.Re3#
      • 1...Rb7
        • 2.Qe2#
      • 1...Re5
        • 2.Sg3#
      • 1...Re6
        • 2.Rxe6#

There are these versions: 73405

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 23
  • Sets
    • Q(c);N_GUARD::S(A)
    • Q(c);N_GUARD,P_PINQ(C)::S(A),XQ(c)
    • Q(c);N_GUARD,XB(H)::S(A)
    • R(a);N_GUARD::S(A)
    • R(a);N_GUARD::S(A),XR(a)
    • R(h);N_GUARD::R(G),XR(h)
    • R(h);N_GUARD,XB(H)::R(G)
    • R(h);N_GUARD::R(G)
    • B(b);S_CUTQ(c)::S(A)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(e);OGATE,S_FLIGHT,XR(E)::QAR1(C)
        • P(f);P_SPINP(f)::S(B)
      • Refutation
        • P(f);XQ(C)
    • Try
      • R(E);
      • Threat
        • B(H)+R(G),DCHECK
      • Vars
        • K(e);P-FLIGHT::S(B),XP(g)
        • Q(c);N_GUARD,XB(H)::QAR2(C)
        • R(h);SBLOCK::S(A)
        • R(h);::B(H)+R(G),DCHECK,XR(h)
      • Refutation
        • R(a);
    • Try
      • R(E);CHECK
      • Vars
        • K(e);P-FLIGHT::S(B),XP(g)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Refutation
        • R(a);XQ(C)
  • Actual
    • R(E);
    • Threat
      • B(H)+R(G),DCHECK
    • Vars
      • K(e);P-FLIGHT::S(B),XP(g)
      • Q(c);N_GUARD,XB(H)::R1(E)
      • R(a);N_GUARD::QAR2(C)
      • R(h);SBLOCK::S(A)
      • R(h);::B(H)+R(G),DCHECK,XR(h)
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