MESON Chess Problem Database

Problem Display
PID: 15830 (3Q4/r2b1KN1/2pk1n1R/P1p1N3/2Pn2p1/8/4P1r1/3R3B w - - 0 1)

Pilchenko, Viacheslav Karlovich

Sp. Prize, Hlas l'udu, 1988

3Q4/r2b1KN1/2pk1n1R/P1p1N3/2Pn2p1/8/4P1r1/3R3B

#2

10 + 9

3297 FIDE Album (1986-1988) 1995
4849 The Sushkov Theme 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa5
      • 2.Qb8#
    • 1...Ra6
      • 2.Qb8#
    • 1...Rc7
      • 2.Qe7#
  • Tries
    • 1.Sd3?
      • threat
        • 2.Se8#
      • 1...Se6
        • 2.Sf5#
      • 1...Rxe2!
    • 1.Sf3?
      • threat
        • 2.Sf5#
        • 2.Se8#
        • 2.Rxf6#
      • 1...Rxe2
        • 2.Sf5#
      • 1...gxf3!
    • 1.Sxg4?
      • threat
        • 2.Sf5#
        • 2.Se8#
        • 2.Rxf6#
      • 1...Rxe2
        • 2.Sf5#
      • 1...Rf2
        • 2.Se8#
      • 1...Rxg4!
    • 1.Sg6?
      • threat
        • 2.Sf5#
      • 1...Sd5
        • 2.Se8#
      • 1...Rf2!
    • 1.Sxd7?
      • threat
        • 2.Sf5#
        • 2.Se8#
        • 2.Rxf6#
      • 1...Rxe2
        • 2.Sf5#
      • 1...Rf2
        • 2.Se8#
      • 1...Rxd7+!
    • 1.Rxd4+?
      • 1...Kxe5
        • 2.Qxf6#
      • 1...cxd4!
  • Keys
    • 1.Sxc6!
      • threat
        • 2.Rxf6#
      • 1...Kxc6
        • 2.Qb6#
      • 1...Rxe2
        • 2.Sf5#
      • 1...Rf2
        • 2.Se8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(h);N_GUARD,XP(E)::QAB(J)
    • R(h);N_GUARD::QAB(J)
    • R(h);SBLOCK::QAB1(J)
  • Tries
    • Try
      • S(F);N_PINS(b),P_PINS(g)
      • Threat
        • S(I)
      • Vars
        • S(b);N_GUARD,N_SPINS(g)::S(I)
      • Refutation
        • R(a);XP(C)
    • Try
      • S(F);
      • Threat
        • DUALS(3)
      • Vars
        • R(a);XP(C)::S(I)
      • Refutation
        • P(c);XS(F)
    • Try
      • S(F);XP(c)
      • Threat
        • DUALS(3)
      • Vars
        • R(a);XP(C)::S(I)
        • R(a);::S(I)
      • Refutation
        • R(a);XS(F)
    • Try
      • S(F);
      • Threat
        • S(I)
      • Vars
        • S(g);N_GUARD,N_SPINS(b)::S(I)
      • Refutation
        • R(a);
    • Try
      • S(F);P_SPINS(F),XB(i)
      • Threat
        • DUALS(3)
      • Vars
        • R(a);XP(C)::S(I)
        • R(a);::S(I)
      • Refutation
        • R(h);CHECK,P_SPINR(h),XS(F)
    • Try
      • R(A);CHECK,P_PINS(g),XS(b)
      • Vars
        • K(f);N_SPINB(i),N_SPINS(g),S_FLIGHT,XS(F)::QAB1(J),XS(g)
      • Refutation
        • P(d);XR(A)
  • Actual
    • S(F);XP(e)
    • Threat
      • R(G),XS(g)
    • Vars
      • K(f);N_SPINB(i),N_SPINS(b),OGATEB,P-FLIGHT,P_SPINR(a),P_SPINS(g),XS(F)::QAR1(J)
      • R(a);XP(C)::S(I)
      • R(a);::S(I)
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