MESON Chess Problem Database

Problem Display
PID: 51127 (2r2bq1/6pp/R3p3/1BkP3Q/Pr1N1NK1/B3P3/8/2n5 w - - 0 1)

Andrade, Barry Jack da Costa

Manchester Guardian, 1950

2r2bq1/6pp/R3p3/1BkP3Q/Pr1N1NK1/B3P3/8/2n5

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qh8
      • 2.Sdxe6#
      • 2.Sfxe6#
    • 1...Rc6
      • 2.Rxc6#
    • 1...Ra8
      • 2.Rc6#
    • 1...Rb8
      • 2.Rc6#
    • 1...Rd8
      • 2.Rc6#
    • 1...Re8
      • 2.Rc6#
    • 1...Sa2
      • 2.Sb3#
      • 2.Sd3#
    • 1...Se2
      • 2.Sb3#
      • 2.Sd3#
    • 1...Sb3
      • 2.Sxb3#
      • 2.Sd3#
    • 1...Sd3
      • 2.Sb3#
      • 2.Sxd3#
  • Tries
    • 1.Qh1?
      • threat
        • 2.Qxc1#
      • 1...Rc6
        • 2.Rxc6#
      • 1...Sa2
        • 2.Sb3#
        • 2.Sd3#
      • 1...Se2
        • 2.Sb3#
        • 2.Sd3#
      • 1...Sb3
        • 2.Sxb3#
        • 2.Sd3#
      • 1...Sd3
        • 2.Sb3#
        • 2.Sxd3#
      • 1...h5+!
    • 1.Qh2?
      • threat
        • 2.Qc2#
      • 1...Rc6
        • 2.Rxc6#
      • 1...Sa2
        • 2.Sb3#
      • 1...Se2
        • 2.Sb3#
      • 1...h5+!
  • Keys
    • 1.Qxh7!
      • threat
        • 2.Qc2#
      • 1...Qxh7
        • 2.Sdxe6#
      • 1...Rc6
        • 2.Rxc6#
      • 1...Sa2
        • 2.Sb3#
      • 1...Se2
        • 2.Sb3#
      • 1...Sd3
        • 2.Sb3#
      • 1...g6
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • R(g);N_GUARD::R1(J),XR(g)
    • R(g);N_GUARD::R1(J)
  • Tries
    • Try
      • Q(I);
      • Threat
        • QAR(I),XS(a)
      • Vars
        • R(g);N_GUARD::R1(J),XR(g)
      • Refutation
        • P(f);CHECK
    • Try
      • Q(I);
      • Threat
        • QAR(I)
      • Vars
        • R(g);N_GUARD::R1(J),XR(g)
        • S(a);N_GUARD::S(D)
      • Refutation
        • P(f);CHECK
  • Actual
    • Q(I);XP(f)
    • Threat
      • QAR(I)
    • Vars
      • Q(i);N_GUARD,XQ(I)::S(D),XP(d)
      • R(g);N_GUARD::R1(J),XR(g)
      • S(a);N_GUARD::S(D)
      • P(e);OGATE::QAB(I)
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