MESON Chess Problem Database

Problem Display
PID: 62417 (2Qb2N1/3K4/8/n2k1P1R/Rp6/1p3p2/1B6/8 w - - 0 1)

Pearson, Arthur Cyril

The Chess Monthly (Hoffer), 1879

2Qb2N1/3K4/8/n2k1P1R/Rp6/1p3p2/1B6/8

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Bb6
      • 2.Sf6#
    • 1...Bf6
      • 2.Sxf6#
    • 1...Sc4
      • 2.Qc6#
    • 1...Sc6
      • 2.Qxc6#
    • 1...Sb7
      • 2.Qc6#
  • Tries
    • 1.Rxa5+?
      • 1...Bxa5
        • 2.Sf6#
        • 2.Qc6#
      • 1...Ke4!
    • 1.Qc5+?
      • 1...Ke4
        • 2.Qd4#
      • 1...Kxc5!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Qd4#
      • 1...Ke4
        • 2.Qd4#
      • 1...bxc3
        • 2.f6#
      • 1...Bb6
        • 2.Sf6#
      • 1...Bf6
        • 2.Sxf6#
      • 1...Sc6
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(f);N_GUARD::S(G)
    • B(f);N_GUARD::S(G),XB(f)
    • S(d);N_GUARD::QAB1(F)
    • S(d);N_GUARD::QAB1(F),XS(d)
  • Tries
    • Try
      • R(B);CHECK,XS(d)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(e);P_SPINP(c),S_FLIGHT::QAR1(F)
      • Refutation
        • K(e);P-FLIGHT,XQ(F)
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • K(e);P_SPINP(c),S_FLIGHT::QAR1(F)
      • P(c);XQ(F)::R(D)+P(C)
      • B(f);N_GUARD::S(G)
      • B(f);N_GUARD::S(G),XB(f)
      • S(d);N_GUARD::QAB1(F),XS(d)
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