MESON Chess Problem Database

Problem Display
PID: 68079 (4R3/8/Npp5/2pnp2N/1PR2p2/1P1k1P2/6p1/4K1Qb w - - 0 1)

Sivak, Bohuslav

3rd Prize, UV CSTV, 1977

4R3/8/Npp5/2pnp2N/1PR2p2/1P1k1P2/6p1/4K1Qb

#2

9 + 9

5865 Czech Album (1976-1978) 1983

SOLUTION

  • SOUND
  • Sets
    • 1...b5
      • 2.Sxc5#
  • Tries
    • 1.Rxe5?
      • 1...Sxb4
        • 2.Sxf4#
      • 1...cxb4
        • 2.Qd4#
      • 1...Se3
        • 2.Sxf4#
      • 1...Sf6
        • 2.Sxf4#
      • 1...Sc7
        • 2.Sxf4#
      • 1...Se7
        • 2.Sxf4#
      • 1...b5
        • 2.Sxc5#
      • 1...Sc3!
    • 1.Qxg2?
      • threat
        • 2.Qd2#
        • 2.Qe2#
      • 1...Ke3
        • 2.Qe2#
      • 1...Sc3
        • 2.Qd2#
      • 1...Bxg2!
    • 1.bxc5?
      • 1...bxc5
        • 2.Sxc5#
      • 1...Sc3
        • 2.Sb4#
      • 1...Se3
        • 2.Sb4#
      • 1...Sb4
        • 2.Sxb4#
      • 1...Sf6
        • 2.Sb4#
      • 1...Sc7
        • 2.Sb4#
      • 1...Se7
        • 2.Sb4#
      • 1...e4
        • 2.Qd4#
      • 1...b5!
  • Keys
    • 1.Rd8!
      • 1...cxb4
        • 2.Sxb4#
      • 1...e4
        • 2.Sxf4#
      • 1...b5
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(h);N_GUARD::S(H),XP(e)
  • Tries
    • Try
      • R(I);XP(g)
      • Vars
        • S(f);N_GUARD,XP(E)::S(G),XP(d)
        • P(e);N_GUARD,XP(E)::QAR1(B)
        • S(f);N_GUARD::S(G),XP(d)
        • P(h);N_GUARD::S(H),XP(e)
      • Refutation
        • S(f);
    • Try
      • Q(B);XP(b)
      • Threat
        • DUALS(2)
      • Vars
        • K(c);P-FLIGHT,P_SPINP(g)::QAR1(B)
        • S(f);::QAR1(B)
      • Refutation
        • B(a);XQ(B)
    • Try
      • P(E);XP(e)
      • Vars
        • P(h);XP(E)::S(H),XP(h)
        • S(f);N_GUARD::S(H)
        • S(f);N_GUARD::S(H),XS(f)
        • P(g);N_GUARD::QAR1(B)
      • Refutation
        • P(h);
  • Actual
    • R(I);P_PINS(f)
    • Vars
      • P(e);XP(E)::S(H),XP(e)
      • P(g);N_GUARD::S(G),XP(d)
      • P(h);N_GUARD::S(H),XP(e)
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