MESON Chess Problem Database

Problem Display
PID: 258008 (Kbn2q2/2p5/1p5N/3Q1pB1/5r2/4kbR1/8/R2B2nN w - - 0 1)

Andrade, Barry Jack da Costa

British Chess Magazine, 1934

Kbn2q2/2p5/1p5N/3Q1pB1/5r2/4kbR1/8/R2B2nN

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qa3+
      • 2.Rxa3#
    • 1...Qb4
      • 2.Sxf5#
    • 1...Qc5
      • 2.Sxf5#
    • 1...Qd6
      • 2.Sxf5#
    • 1...Qxh6
      • 2.Ra3#
    • 1...Qe7
      • 2.Sxf5#
    • 1...Qg7
      • 2.Sxf5#
    • 1...Qf7
      • 2.Ra3#
    • 1...Qd8
      • 2.Sxf5#
      • 2.Ra3#
    • 1...Qe8
      • 2.Sxf5#
      • 2.Ra3#
    • 1...Qg8
      • 2.Sxf5#
      • 2.Ra3#
    • 1...Qh8
      • 2.Sxf5#
    • 1...Se2
      • 2.Rxf3#
    • 1...Sh3
      • 2.Rxf3#
    • 1...Sd6
      • 2.Ra3#
    • 1...Se7
      • 2.Ra3#
    • 1...c5
      • 2.Ra3#
  • Keys
    • 1.Ra4!
      • threat
        • 2.Bxf4#
      • 1...Qxh6
        • 2.Ra3#
      • 1...Qb4
        • 2.Sxf5#
      • 1...Qd6
        • 2.Sxf5#
      • 1...Se2
        • 2.Rxf3#
      • 1...Sh3
        • 2.Rxf3#
      • 1...c5
        • 2.Ra3#
      • 1...c6
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • Q(j);CHECK,N_GUARD::R(A),XQ(j)
    • Q(j);N_GUARD::S(G),XP(e)
    • Q(j);N_GUARD,XS(G)::R(A)
    • Q(j);N_GUARD::R(A)
    • S(a);N_GUARD::R1(D),XB(c)
    • S(i);S_CUTQ(j)::R(A)
    • P(g);S_CUTQ(j)::R(A)
  • Actual
    • R(A);
    • Threat
      • B(F),XR(d)
    • Vars
      • Q(j);N_GUARD,XS(G)::R(A)
      • Q(j);N_GUARD::S(G),XP(e)
      • S(a);N_GUARD::R1(D),XB(c)
      • P(g);S_CUTQ(j)::R(A)
      • P(g);N_PINQ(E)::QAB1(E)
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