MESON Chess Problem Database

Problem Display
PID: 50905 (1q2R3/8/1pn5/1BP1np2/3b4/1N3kPK/5rp1/3bQrB1 w - - 0 1)

MacFarlane, J

Chess Amateur (The), 1908

1q2R3/8/1pn5/1BP1np2/3b4/1N3kPK/5rp1/3bQrB1

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rd2
      • 2.Sxd2#
    • 1...Sd3
      • 2.Bxc6#
    • 1...Sc4
      • 2.Bxc6#
    • 1...Sg4
      • 2.Bxc6#
    • 1...Sg6
      • 2.Bxc6#
    • 1...Sd7
      • 2.Bxc6#
    • 1...Sf7
      • 2.Bxc6#
    • 1...Sb4
      • 2.Sxd4#
    • 1...Sa5
      • 2.Sxd4#
    • 1...Sa7
      • 2.Sxd4#
    • 1...Se7
      • 2.Sxd4#
    • 1...Sd8
      • 2.Sxd4#
  • Keys
    • 1.Qd2!
      • threat
        • 2.Qf4#
      • 1...Ke4
        • 2.Bxc6#
      • 1...Rxd2
        • 2.Sxd2#
      • 1...Be3
        • 2.Qd5#
      • 1...Sd3
        • 2.Bxc6#
      • 1...Sc4
        • 2.Bxc6#
      • 1...Sg4
        • 2.Bxc6#
      • 1...Sg6
        • 2.Bxc6#
      • 1...Sd7
        • 2.Bxc6#
      • 1...Sf7
        • 2.Bxc6#
      • 1...f4
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(c);N_GUARD::S(C),XR(c)
    • S(g);N_GUARD::B(F),XS(j)
    • S(j);N_GUARD::S(C),XB(f)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • K(e);P_SPINS(g),S_FLIGHT::B(F),XS(j)
      • R(c);XQ(A)::S(C),XR(c)
      • B(f);OGATE,SBLOCK::QAB(A)
      • S(g);N_GUARD::B(F),XS(j)
      • P(h);::QAR1(A),XP(h)
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