MESON Chess Problem Database

Problem Display
PID: 147121 (4N3/5np1/2pP1PNn/Q1K5/1pp1k1P1/3p1p2/5PR1/3B2B1 w - - 0 1)

Saunders, Denis M

Australian Chess Problem Magazine, 1997

4N3/5np1/2pP1PNn/Q1K5/1pp1k1P1/3p1p2/5PR1/3B2B1

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sxd6
      • 2.Sxd6#
    • 1...d2
      • 2.Bc2#
    • 1...fxg2
      • 2.f3#
    • 1...b3
      • 2.Qe1#
    • 1...c3
      • 2.Qxb4#
    • 1...gxf6
      • 2.Sxf6#
  • Keys
    • 1.Kxc4!
      • 1...Se5+
        • 2.Qxe5#
      • 1...Sxd6+
        • 2.Sxd6#
      • 1...Sxg4
        • 2.Rxg4#
      • 1...fxg2
        • 2.f3#
      • 1...gxf6
        • 2.Sxf6#
      • 1...Sf5
        • 2.Qxf5#
      • 1...Sg8
        • 2.Qf5#
      • 1...Sg5
        • 2.Qe5#
      • 1...Sd8
        • 2.Qe5#
      • 1...Sh8
        • 2.Qe5#
      • 1...d2
        • 2.Bc2#
      • 1...b3
        • 2.Qe1#
      • 1...c5
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • S(h);XP(H)::S(K),XS(h)
    • P(a);OGATEB::B(A)
    • P(b);OGATE,XR(D)::P(C)
    • P(c);OGATE::QAR(F)
    • P(d);OGATEB::QAR(F),XP(c)
    • P(i);XP(I)::S(K),XP(i)
  • Actual
    • K(G);P-FLIGHT,XP(d)
    • Vars
      • S(h);CHECK,N_GUARD::QAR1(F),XS(h)
      • S(h);CHECK,XP(H)::S(K),XS(h)
      • S(g);OGATE,XP(E)::R(D),XS(g)
      • P(b);OGATE,XR(D)::P(C)
      • P(i);XP(I)::S(K),XP(i)
      • S(g);N_GUARD::QAB1(F),XS(g)
      • S(g);N_GUARD::QAB1(F)
      • S(h);N_GUARD::QAR1(F)
      • P(a);OGATEB::B(A)
      • P(c);OGATE::QAR(F)
      • P(f);OGATEB::QAB(F)
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