MESON Chess Problem Database

Problem Display
PID: 251627 (B4BN1/2pb1RK1/2n1p2R/3Pk1p1/1P4P1/2P1pPpn/1N3b2/8 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

3rd Prize, Schach-Aktiv, 1988

B4BN1/2pb1RK1/2n1p2R/3Pk1p1/1P4P1/2P1pPpn/1N3b2/8

#2

12 + 10

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sxb4
      • 2.Sc4#
    • 1...Sd4
      • 2.Sd3#
      • 2.Sc4#
    • 1...Sa5
      • 2.Sd3#
    • 1...Sa7
      • 2.Sd3#
      • 2.Sc4#
    • 1...Se7
      • 2.Sc4#
    • 1...Sb8
      • 2.Sd3#
      • 2.Sc4#
    • 1...Sd8
      • 2.Sd3#
      • 2.Sc4#
    • 1...exd5
      • 2.Sd3#
  • Tries
    • 1.Sf6?
      • threat
        • 2.Sd3#
      • 1...Kf4
        • 2.Sxd7#
      • 1...Sxb4
        • 2.Sxd7#
      • 1...exd5
        • 2.Sxd7#
      • 1...Sf4
        • 2.Sc4#
      • 1...Se7!
    • 1.Bxc6?
      • threat
        • 2.Sd3#
        • 2.Sc4#
      • 1...exd5
        • 2.Sd3#
      • 1...Sf4
        • 2.Sc4#
      • 1...Bxc6!
    • 1.dxe6?
      • threat
        • 2.Rf5#
      • 1...Kd5
        • 2.Rf5#
      • 1...Sd4
        • 2.Sd3#
        • 2.Sc4#
      • 1...Se7
        • 2.Sc4#
      • 1...Bxe6!
  • Keys
    • 1.Se7!
      • threat
        • 2.Sc4#
      • 1...Kd6
        • 2.Sc4#
      • 1...exd5
        • 2.Sd3#
      • 1...Sa5
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • S(g);XP(D)::S(A)
    • S(g);::S(A)
    • P(h);SBLOCK,XP(F)::S(A)
  • Tries
    • Try
      • S(L);
      • Threat
        • S(A)
      • Vars
        • K(e);N_GUARD,S_FLIGHT::R(H)+S(L),XB(j)
        • S(g);XP(D)::S(L),XB(j)
        • P(h);SBLOCK,XP(F)::S(L),XB(j)
        • S(d);SBLOCK::S(A)
      • Refutation
        • S(g);
    • Try
      • B(J);XS(g)
      • Threat
        • DUALS(2)
      • Vars
        • P(h);XP(F)::S(A)
        • S(d);::S(A)
      • Refutation
        • B(j);XB(J)
    • Try
      • P(F);XP(h)
      • Threat
        • R1(H)
      • Vars
        • K(e);P-FLIGHT,P_SPINS(g)::R(H)
        • S(g);::S(A)
      • Refutation
        • B(j);XP(F)
  • Actual
    • S(L);
    • Threat
      • S(A)
    • Vars
      • K(e);P_SPINP(h),S_FLIGHT::S(A)
      • P(h);XP(F)::S(A)
      • S(g);::S(L)
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