MESON Chess Problem Database

Problem Display
PID: 157810 (3B4/3K4/p1Np4/n2k1Bn1/1Q1p1p2/qp3r2/3rN3/2R5 w - - 0 1)

Lukashev, Viktor Sergeevich

Best Problems, 2008

3B4/3K4/p1Np4/n2k1Bn1/1Q1p1p2/qp3r2/3rN3/2R5

#2

7 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qb2
      • 2.Qxa5#
      • 2.Qxd6#
    • 1...Qa1
      • 2.Qxd6#
    • 1...Qa2
      • 2.Qxd6#
    • 1...Qa4
      • 2.Qxd6#
    • 1...Ra2
      • 2.Qxd4#
    • 1...Rb2
      • 2.Qxd4#
    • 1...Rc2
      • 2.Qxd4#
    • 1...Rxe2
      • 2.Qxd4#
    • 1...Rc3
      • 2.Sxf4#
    • 1...Rd3
      • 2.Sxf4#
    • 1...Re3
      • 2.Sxf4#
    • 1...Rg3
      • 2.Sxf4#
    • 1...Rh3
      • 2.Sxf4#
    • 1...Sc4
      • 2.Qxc4#
    • 1...Sb7
      • 2.Qc4#
    • 1...Se4
      • 2.Be6#
    • 1...d3
      • 2.Sc3#
      • 2.Qd4#
  • Keys
    • 1.Bf6!
      • threat
        • 2.Se7#
      • 1...Rxe2
        • 2.Qxd4#
      • 1...Sxc6
        • 2.Qc4#
      • 1...Qa4
        • 2.Qxd6#
      • 1...Re3
        • 2.Sxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 12
  • Sets
    • Q(b);N_GUARD::QAR1(C),XP(k)
    • Q(b);N_GUARD,P_PINS(E)::QAR1(C),XP(k)
    • R(a);N_GUARD::QAR1(C),XP(e)
    • R(a);N_GUARD,XS(B)::QAR1(C),XP(e)
    • R(d);N_GUARD::S(B),XP(f)
    • S(g);N_GUARD::QAB1(C),XS(g)
    • S(g);N_GUARD::QAB1(C)
    • S(i);N_GUARD,SBLOCK::B(D)
  • Actual
    • B(G);
    • Threat
      • S(E)
    • Vars
      • R(a);N_GUARD,XS(B)::QAR1(C),XP(e)
      • S(g);N_GUARD,XS(E)::QAB1(C)
      • Q(b);N_GUARD,P_PINS(E)::QAR1(C),XP(k)
      • R(d);N_GUARD::S(B),XP(f)
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