MESON Chess Problem Database

Problem Display
PID: 2744 (4K3/1N6/8/2pk1B1N/3b4/4p3/4P3/B3Q3 w - - 0 1)

Thursby, John Ormerod Scarlett

Source?, 0000

4K3/1N6/8/2pk1B1N/3b4/4p3/4P3/B3Q3

#2

7 + 4

3357 75 Chess Problems 1883

SOLUTION

  • SOUND
  • Tries
    • 1.Qb1?
      • 1...Kc4
        • 2.Be6#
      • 1...Ke5
        • 2.Qe4#
      • 1...Bxa1
        • 2.Qe4#
      • 1...Bb2
        • 2.Qe4#
      • 1...Bc3
        • 2.Qe4#
      • 1...Be5
        • 2.Qe4#
      • 1...Bf6
        • 2.Qe4#
      • 1...Bg7
        • 2.Qe4#
      • 1...Bh8
        • 2.Qe4#
      • 1...c4
        • 2.Qe4#
      • 1...Kc6!
    • 1.Qh1+?
      • 1...Ke5
        • 2.Qe4#
      • 1...Kc4!
  • Keys
    • 1.Qa5!
      • 1...Kc4
        • 2.Be6#
      • 1...Ke5
        • 2.Qxc5#
      • 1...Kc6
        • 2.Be4#
      • 1...Bxa1
        • 2.Qxc5#
      • 1...Bb2
        • 2.Qxc5#
      • 1...Bc3
        • 2.Qxc5#
      • 1...Be5
        • 2.Qxc5#
      • 1...Bf6
        • 2.Qxc5#
      • 1...Bg7
        • 2.Qxc5#
      • 1...Bh8
        • 2.Qxc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Vars
        • K(d);S_FLIGHT::B(D)
        • K(d);P-FLIGHT,P_SPINB(b)::QAR1(B)
        • B(b);XB(A)::QAB1(B)
        • B(b);::QAB1(B)
        • P(c);SBLOCK::QAB1(B)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINB(b)::QAR1(B)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(B);P_PINP(c)
    • Vars
      • K(d);N_SPINP(c),S_FLIGHT::B(D)
      • K(d);P-FLIGHT,P_SPINB(b)::QAR2(B),XP(c)
      • B(b);N_GUARD,XB(A)::QAR1(B),XP(c)
      • B(b);N_GUARD::QAR1(B),XP(c)
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