MESON Chess Problem Database

Problem Display
PID: 23288 (4B3/3pB3/1r1p3p/q1Qb1kN1/2N2P1n/2r1PpbK/8/8 w - - 0 1)

Veders, Visvaldis M

3rd HM., The Problemist, 1997/I

4B3/3pB3/1r1p3p/q1Qb1kN1/2N2P1n/2r1PpbK/8/8

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qb4
      • 2.Qxd5#
    • 1...Qa1
      • 2.Qxd5#
    • 1...Qa2
      • 2.Qxd5#
    • 1...Qa3
      • 2.Qxd5#
    • 1...Qa4
      • 2.Qxd5#
    • 1...Qa6
      • 2.Qxd5#
    • 1...Qa7
      • 2.Qxd5#
    • 1...Rb1
      • 2.Sxd6#
    • 1...Rb2
      • 2.Sxd6#
    • 1...Rb3
      • 2.Sxd6#
    • 1...Rb4
      • 2.Sxd6#
    • 1...Rb5
      • 2.Sxd6#
    • 1...Rb7
      • 2.Sxd6#
    • 1...Rb8
      • 2.Sxd6#
    • 1...Bxf4
      • 2.e4#
    • 1...Sg6
      • 2.Bxd7#
  • Keys
    • 1.Qxd6!
      • threat
        • 2.Qe5#
      • 1...Rxe3
        • 2.Sxe3#
      • 1...Rxd6
        • 2.Sxd6#
      • 1...Bxf4
        • 2.Qxf4#
      • 1...Bxc4
        • 2.e4#
      • 1...Be4
        • 2.Bxd7#
      • 1...Bc6
        • 2.Qf6#
      • 1...Be6
        • 2.e4#
      • 1...Bb7
        • 2.Bxd7#
      • 1...Bf7
        • 2.e4#
      • 1...Ba8
        • 2.Bxd7#
      • 1...Bg8
        • 2.e4#
      • 1...Sg6
        • 2.Bxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 10
    • REMOVED MATES = 14
  • Sets
    • Q(e);N_GUARD::QAR2(E),XB(f)
    • R(h);N_GUARD::S(C),XP(i)
    • B(c);SBLOCK,XP(D)::P(A)
    • S(d);SBLOCK::B(H),XP(k)
  • Actual
    • Q(E);N_PINB(f),XP(i)
    • Threat
      • QAR1(E)
    • Vars
      • R(a);XP(A)::S(C),XR(a)
      • R(h);XQ(E)::S(C),XR(h)
      • B(c);OGATE,XP(D)::QAR1(E),XB(c)
      • B(f);N_GUARD,XS(C)::P(A)
      • B(f);N_GUARD::B(H),XP(k)
      • B(f);S_CUTR(h)::QAR1(E)
      • B(f);N_GUARD::P(A)
      • S(d);N_GUARD::B(H),XS(d)
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