MESON Chess Problem Database

Problem Display
PID: 81810 (2r1R3/B3PB1p/2pK4/8/4k3/1N1bP2Q/2r4n/4n2q w - - 0 1)

Andrade, Barry Jack da Costa

The Field, 1953

(First published on Thu Jan 15 1953)

2r1R3/B3PB1p/2pK4/8/4k3/1N1bP2Q/2r4n/4n2q

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qf3
      • 2.Qe6#
    • 1...Rc1
      • 2.Sd2#
    • 1...Ra2
      • 2.Sc5#
    • 1...Rb2
      • 2.Sc5#
    • 1...Rd2
      • 2.Sxd2#
      • 2.Sc5#
    • 1...Re2
      • 2.Sc5#
    • 1...Rf2
      • 2.Sc5#
    • 1...Rg2
      • 2.Sc5#
    • 1...Rc3
      • 2.Sd2#
    • 1...Rc4
      • 2.Sd2#
    • 1...Rc5
      • 2.Sd2#
      • 2.Sxc5#
    • 1...Rd8+
      • 2.exd8Q#
      • 2.exd8S#
      • 2.exd8B#
      • 2.exd8R#
    • 1...Bc4
      • 2.Sc5#
    • 1...Sef3
      • 2.Qxh7#
    • 1...Sf1
      • 2.Qg4#
    • 1...Shf3
      • 2.Qg4#
    • 1...Sg4
      • 2.Qxg4#
    • 1...c5
      • 2.Bd5#
    • 1...h5
      • 2.Bg6#
    • 1...h6
      • 2.Bg6#
  • Tries
    • 1.Qh4+?
      • 1...Kf5
        • 2.Sd4#
        • 2.Qf4#
      • 1...Sg4
        • 2.Qxg4#
      • 1...Kf3!
  • Keys
    • 1.Bc4!
      • threat
        • 2.Sc5#
      • 1...Rd8+
        • 2.exd8Q#
        • 2.exd8S#
        • 2.exd8B#
        • 2.exd8R#
      • 1...Rxc4
        • 2.Sd2#
      • 1...Sg4
        • 2.Qxg4#
      • 1...Qf3
        • 2.Qe6#
      • 1...Sef3
        • 2.Qxh7#
      • 1...Shf3
        • 2.Qg4#
      • 1...c5
        • 2.Bd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 11
  • Sets
    • Q(b);SBLOCK::QAR2(C)
    • R(c);N_GUARD::S(A)
    • B(e);S_CUTR(c)::S(A)
    • S(a);SBLOCK::QAB(C),XP(h)
    • S(d);N_GUARD::QAR2(C)
    • S(d);N_GUARD::QAR2(C),XS(d)
    • P(g);N_GUARD::B(G)
    • P(h);N_GUARD::B(G)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • S(d);N_GUARD,P_SPINS(d)::QAR2(C),XS(d)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • B(G);
    • Threat
      • S(A)
    • Vars
      • R(c);N_GUARD,XB(G)::S(A)
      • S(d);N_GUARD::QAR2(C),XS(d)
      • Q(b);SBLOCK::QAR2(C)
      • S(a);SBLOCK::QAB(C),XP(h)
      • S(d);N_GUARD::QAR2(C)
      • P(g);N_GUARD::B(G)
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