MESON Chess Problem Database

Problem Display
PID: 147129 (q2rr3/p5pB/Q3Pp1N/n1pk4/8/1PP2b2/4R2B/1n4K1 w - - 0 1)

Lincoln, Robert A

Australian Chess Problem Magazine, 1997

q2rr3/p5pB/Q3Pp1N/n1pk4/8/1PP2b2/4R2B/1n4K1

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qc6
      • 2.Qd3#
    • 1...Rd6
      • 2.Qxd6#
    • 1...Rb8
      • 2.Qd6#
    • 1...Rc8
      • 2.Qd6#
    • 1...Rxe6
      • 2.Qxe6#
    • 1...Be4
      • 2.Bxe4#
    • 1...Bg4
      • 2.Be4#
    • 1...Bh5
      • 2.Be4#
    • 1...Sd2
      • 2.Rxd2#
    • 1...Sa3
      • 2.Rd2#
    • 1...Sxc3
      • 2.Rd2#
    • 1...Sc4
      • 2.bxc4#
    • 1...Sc6
      • 2.Qc4#
    • 1...c4
      • 2.Qb5#
    • 1...f5
      • 2.Re5#
  • Keys
    • 1.Sg4!
      • threat
        • 2.Se3#
      • 1...Rxe6
        • 2.Qxe6#
      • 1...Bxg4
        • 2.Be4#
      • 1...Sxc3
        • 2.Rd2#
      • 1...c4
        • 2.Qb5#
      • 1...Qc6
        • 2.Qd3#
      • 1...Rd6
        • 2.Qxd6#
      • 1...Sc4
        • 2.bxc4#
      • 1...Sc6
        • 2.Qc4#
      • 1...f5
        • 2.Re5#
      • 1...g6
        • 2.Sxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • Q(i);SBLOCK::QAR2(F)
    • R(j);N_GUARD::QAR1(F),XR(j)
    • R(j);N_GUARD::QAR1(F)
    • R(k);OGATE,XP(G)::QAB1(F),XR(k)
    • B(b);N_GUARD::B(I),XB(b)
    • B(b);N_GUARD::B(I)
    • S(a);N_GUARD::R(B),XS(a)
    • S(a);N_GUARD::R(B)
    • S(a);N_GUARD,XP(E)::R(B)
    • S(c);OGATE::P(D),XS(c)
    • S(c);N_GUARD,SBLOCK::QAB1(F)
    • P(d);OGATEB::QAR2(F)
    • P(f);N_GUARD::R1(B)
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • R(k);OGATE,XP(G)::QAB1(F),XR(k)
      • B(b);N_GUARD,XS(H)::B(I)
      • S(a);N_GUARD,XP(E)::R(B)
      • P(d);OGATEB::QAR2(F)
      • Q(i);SBLOCK::QAR2(F)
      • R(j);N_GUARD::QAR1(F),XR(j)
      • S(c);OGATE::P(D),XS(c)
      • S(c);N_GUARD,SBLOCK::QAB1(F)
      • P(f);N_GUARD::R1(B)
      • P(h);N_GUARD::S(H),XP(f)
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