MESON Chess Problem Database

Problem Display
PID: 180911 (2N1Kn2/8/1Pk2p2/2N2p1R/8/b3B3/Qn2B3/8 w - - 0 1)

Healey, Percy E

British Chess Magazine, 1911

2N1Kn2/8/1Pk2p2/2N2p1R/8/b3B3/Qn2B3/8

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Bb4
      • 2.Qa8#
    • 1...Bxc5
      • 2.Qa8#
    • 1...Se6
      • 2.Qxe6#
    • 1...Sg6
      • 2.Qe6#
    • 1...Sd7
      • 2.Qe6#
    • 1...Sh7
      • 2.Qe6#
    • 1...f4
      • 2.Qd5#
  • Tries
    • 1.Se7+?
      • 1...Kd6
        • 2.Qd5#
      • 1...Kxb6!
    • 1.Qb3?
      • threat
        • 2.Bf3#
        • 2.Bb5#
      • 1...Bxc5
        • 2.Bf3#
      • 1...Sc4
        • 2.Bf3#
      • 1...Sd3
        • 2.Bf3#
      • 1...Bb4!
  • Keys
    • 1.Qb1!
      • threat
        • 2.Qh1#
      • 1...Kd5
        • 2.Qe4#
      • 1...Sd1
        • 2.Bf3#
      • 1...Sd3
        • 2.Bf3#
      • 1...Sc4
        • 2.Bf3#
      • 1...f4
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • B(b);OGATE::QAB(A)
    • B(b);OGATE,XS(D)::QAB(A)
    • S(f);N_GUARD::QAR2(A),XS(f)
    • S(f);N_GUARD::QAR2(A)
    • P(c);::QAB1(A)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR1(A)
      • Refutation
        • K(d);P-FLIGHT,XP(F)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);XS(D)::B(B)
        • S(a);::B(B)
      • Refutation
        • B(b);
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • K(d);P_SPINP(c),S_FLIGHT::QAB1(A)
      • S(a);::B(B)
      • P(c);N_GUARD::QAB(A)
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