MESON Chess Problem Database

Problem Display
PID: 48154 (B3rb2/1N2pp1K/ppn2B2/4RN1Q/p1kP4/Pb6/3PP2n/1R6 w - - 0 1)

Alaikov, Venelin

1st Prize, Shakhmatna misl, 1986

B3rb2/1N2pp1K/ppn2B2/4RN1Q/p1kP4/Pb6/3PP2n/1R6

#2

12 + 11

3297 FIDE Album (1986-1988) 1995
15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Sxd4
      • 2.Se3#
    • 1...b5
      • 2.Rc5#
  • Tries
    • 1.Sfd6+?
      • 1...Kxd4
        • 2.Re4#
        • 2.Rd5#
      • 1...exd6!
    • 1.Sa5+?
      • 1...bxa5
        • 2.Rc5#
      • 1...Sxa5!
    • 1.Bxe7?
      • threat
        • 2.Sbd6#
        • 2.Qxf7#
      • 1...Rxe7
        • 2.Sbd6#
      • 1...Bxe7
        • 2.Qxf7#
      • 1...Sxd4
        • 2.Se3#
        • 2.Sfd6#
        • 2.Sbd6#
      • 1...Sxe5
        • 2.Sbd6#
      • 1...Sxe7
        • 2.Sbd6#
      • 1...Sb4
        • 2.Sbd6#
      • 1...Sd8
        • 2.Sbd6#
      • 1...f6
        • 2.Sbd6#
        • 2.Qf7#
      • 1...Rd8!
  • Keys
    • 1.Rxe7!
      • threat
        • 2.Se3#
        • 2.Sfd6#
      • 1...Kb5
        • 2.Sfd6#
      • 1...Kd5
        • 2.Se3#
        • 2.Qxf7#
      • 1...Rxe7
        • 2.Sfd6#
      • 1...Bxe7
        • 2.Se3#
      • 1...Bc2
        • 2.Qxf7#
      • 1...Rd8
        • 2.Se3#
      • 1...Bh6
        • 2.Sfd6#
      • 1...Sf1
        • 2.Sfd6#
      • 1...Sg4
        • 2.Sfd6#
      • 1...Se5
        • 2.Sbd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 2
  • Sets
    • S(g);SBLOCK,XP(E)::S(G)
    • P(f);N_GUARD::R1(F)
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • P(h);XS(G)
    • Try
      • S(J);CHECK
      • Vars
        • P(f);XS(J)::R1(F)
      • Refutation
        • S(g);XS(J)
    • Try
      • B(I);XP(h)
      • Threat
        • DUALS(2)
      • Vars
        • R(j);XB(I)::S(J)
        • B(k);XB(I)::QAB(H),XP(i)
        • S(g);XR(F)::S(J)
        • S(g);XB(I)::S(J)
        • S(g);::S(J)
      • Refutation
        • R(j);
  • Actual
    • R(F);XP(h)
    • Threat
      • DUALS(2)
    • Vars
      • K(d);P_SPINB(b),S_FLIGHT::QAR(H)+S(G),DCHECK
      • R(j);XR(F)::S(G)
      • B(k);XR(F)::S(G)
      • B(b);P_PINS(G)::QAB(H),XP(i)
      • R(j);::S(G)
      • B(k);::S(G)
      • S(a);::S(G)
      • S(g);::S(J)
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