MESON Chess Problem Database

Problem Display
PID: 80907 (3n4/1bpP1RPr/3kpQ1B/2NP2n1/BP2p3/4NpK1/3r1P2/8 w - - 0 1)

Pituk, Alexander

5th HM., Probleemblad, 1979

3n4/1bpP1RPr/3kpQ1B/2NP2n1/BP2p3/4NpK1/3r1P2/8

#2

12 + 10

6424 Czech Album (1979-1981) 1986

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd5
      • 2.Sc4#
    • 1...Bxd5
      • 2.Sf5#
    • 1...Bc8
      • 2.dxc8S#
    • 1...Sh3
      • 2.Sxe4#
    • 1...Sgxf7
      • 2.Sxe4#
    • 1...Sc6
      • 2.Sxb7#
    • 1...Sdxf7
      • 2.Sxb7#
  • Tries
    • 1.Kf4?
      • threat
        • 2.Qe5#
        • 2.Qe7#
      • 1...Rxd5
        • 2.Sc4#
        • 2.Qe7#
      • 1...Sgxf7
        • 2.Sxe4#
      • 1...Sdxf7
        • 2.Sxb7#
      • 1...c6
        • 2.Qe5#
      • 1...Sc6
        • 2.Sxb7#
      • 1...Sh3+!
  • Keys
    • 1.Sxe6!
      • threat
        • 2.Qf4#
      • 1...Rxd5
        • 2.Sc4#
      • 1...Bxd5
        • 2.Sf5#
      • 1...Sgxe6
        • 2.Bf4#
      • 1...Sgxf7
        • 2.Sxd8#
      • 1...Sdxe6
        • 2.d8Q#
        • 2.d8R#
      • 1...Sdxf7
        • 2.Sxg5#
      • 1...Sh3
        • 2.Sxd8#
      • 1...Sc6
        • 2.Sxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(a);SBLOCK,XP(G)::S(B)
    • B(g);SBLOCK,XP(G)::S(B)
    • B(g);OGATE::PXB(g)=S
    • S(d);N_GUARD::S(F),XP(c)
    • S(d);N_GUARD,XR(K)::S(F),XP(c)
    • S(j);N_GUARD::S(F),XB(g)
    • S(j);N_GUARD,XR(K)::S(F),XB(g)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • S(d);N_GUARD,XR(K)::S(F),XP(c)
        • S(j);N_GUARD,XR(K)::S(F),XB(g)
        • P(h);::QAB1(H)
        • S(j);N_GUARD::S(F),XB(g)
      • Refutation
        • S(d);CHECK
  • Actual
    • S(F);XP(f)
    • Threat
      • QAB(H)
    • Vars
      • R(a);SBLOCK,XP(G)::S(B)
      • B(g);SBLOCK,XP(G)::S(B)
      • S(d);OGATE,P_SPINS(d),XS(F)::B(I)
      • S(d);N_GUARD,XR(K)::QAR(H)+S(F),XS(j)
      • S(j);OGATE,P_SPINS(j),XS(F)::P=Q
      • S(j);N_GUARD,XR(K)::QAR(H)+S(F),XS(d)
      • S(d);N_GUARD::QAR(H)+S(F),XS(j)
      • S(j);N_GUARD::QAR(H)+S(F),XS(d)
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