MESON Chess Problem Database

Problem Display
PID: 44791 (r7/3p1N1N/2pPkPP1/2R4n/P1n1P3/1R3p2/B1Kb2pq/8 w - - 0 1)

Soroka, Ivan Ivanovich

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

1st Prize, Probleemblad, 1983

r7/3p1N1N/2pPkPP1/2R4n/P1n1P3/1R3p2/B1Kb2pq/8

#2

11 + 10

3485 Sachova skladba 1985
3748 FIDE Album (1983-1985) 1992
4640 Chess Wizardry: The New ABC of Chess Problems 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Rxb2#
    • 1...Sa3+
      • 2.Rxa3#
    • 1...Se3+
      • 2.Rxe3#
    • 1...Sb6
      • 2.Rxb6#
  • Tries
    • 1.Rd3?
      • threat
        • 2.Bxc4#
      • 1...Qxd6
        • 2.Rxd6#
      • 1...Rxa4
        • 2.Sd8#
      • 1...Qe5
        • 2.Rxe5#
      • 1...Sf4
        • 2.Sfg5#
        • 2.Re5#
      • 1...Sxf6!
    • 1.Re3?
      • threat
        • 2.Bxc4#
      • 1...Qxd6
        • 2.Sfg5#
      • 1...Sxf6
        • 2.Shg5#
      • 1...Qe5
        • 2.Rxe5#
      • 1...Sf4
        • 2.Re5#
      • 1...Rxa4!
    • 1.Rxf3?
      • threat
        • 2.Bxc4#
      • 1...Rxa4
        • 2.Sf8#
      • 1...Sxf6
        • 2.Rxf6#
      • 1...Qe5
        • 2.Rxe5#
      • 1...Sf4
        • 2.Re5#
      • 1...Qxd6!
  • Keys
    • 1.Rb8!
      • threat
        • 2.Bxc4#
      • 1...Qxd6
        • 2.Sd8#
      • 1...Rxa4
        • 2.Re8#
      • 1...Sxf6
        • 2.Sf8#
      • 1...Qe5
        • 2.Rxe5#
      • 1...Sf4
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • S(e);OGATEB::B(A)+R(C),XS(e)
    • S(e);CHECK,OGATEB::B(A)+R(C),XS(e)
  • Tries
    • Try
      • R(C);P_PINS(e)
      • Threat
        • B(A),XS(e)
      • Vars
        • Q(c);OGATE,XP(G)::R1(C),XQ(c)
        • R(j);N_GUARD,XP(D)::S(J)
        • Q(c);N_GUARD::R1(F),XQ(c)
      • Refutation
        • S(f);XP(H)
    • Try
      • R(C);P_PINS(e)
      • Threat
        • B(A),XS(e)
      • Vars
        • Q(c);SBLOCK,XP(G)::S(J)
        • S(f);SBLOCK,XP(H)::S(K)
        • Q(c);N_GUARD::R1(F),XQ(c)
        • S(f);S_CUTQ(c)::R1(F)
      • Refutation
        • R(j);XP(D)
    • Try
      • R(C);P_PINS(e),XP(d)
      • Threat
        • B(A),XS(e)
      • Vars
        • R(j);N_GUARD,XP(D)::S(K)
        • S(f);OGATE,XP(H)::R1(C),XS(f)
        • Q(c);N_GUARD::R1(F),XQ(c)
        • S(f);S_CUTQ(c)::R1(F)
      • Refutation
        • Q(c);XP(G)
  • Actual
    • R(C);P_PINS(e)
    • Threat
      • B(A),XS(e)
    • Vars
      • Q(c);SBLOCK,XP(G)::S(J)
      • R(j);N_GUARD,XP(D)::R(C)
      • S(f);SBLOCK,XP(H)::S(K)
      • Q(c);N_GUARD::R1(F),XQ(c)
      • S(f);S_CUTQ(c)::R1(F)
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