MESON Chess Problem Database

Problem Display
PID: 5069 (8/2R5/6K1/3Pp3/1Npk4/1p5Q/5b2/2B5 w - - 0 1)

Bonner Feast, Frederick

The Times, 1898

8/2R5/6K1/3Pp3/1Npk4/1p5Q/5b2/2B5

#2

6 + 5

3360 Simple Two-move Themes 1924
3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qg4#
    • 1...Be1
      • 2.Qe3#
    • 1...Be3
      • 2.Qxe3#
    • 1...Bh4
      • 2.Qe3#
    • 1...c3
      • 2.Qd3#
    • 1...e4
      • 2.Qh8#
  • Tries
    • 1.Bb2+?
      • 1...c3
        • 2.Qd3#
      • 1...Ke4!
    • 1.Qg4+?
      • 1...Kc3
        • 2.Rxc4#
        • 2.Qxc4#
      • 1...e4!
    • 1.Qf3?
      • 1...Be3
        • 2.Qxe3#
      • 1...e4
        • 2.Qf6#
      • 1...Be1
        • 2.Qe3#
      • 1...Bg3
        • 2.Qe3#
      • 1...Bh4
        • 2.Qe3#
      • 1...b2
        • 2.Sc2#
      • 1...c3
        • 2.Qd3#
      • 1...Bg1!
    • 1.Qh4+?
      • 1...Kc3
        • 2.Rxc4#
        • 2.Qxc4#
      • 1...e4
        • 2.Qf6#
        • 2.Qh8#
      • 1...Bxh4!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Rxc4#
      • 1...Kc3
        • 2.Rxc4#
      • 1...Ke4
        • 2.Qg4#
      • 1...c3
        • 2.Rc4#
      • 1...e4
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • K(d);P-FLIGHT::QAR2(B)
    • B(a);N_GUARD::QAB1(B)
    • B(a);N_GUARD::QAB1(B),XB(a)
    • P(c);N_GUARD::QAR1(B)
    • P(e);OGATEB,SBLOCK::QAB(B)
  • Tries
    • Try
      • B(A);CHECK
      • Vars
        • P(c);P_SPINP(c)::QAR1(B)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • P(e);P_SPINP(e)
    • Try
      • Q(B);
      • Vars
        • B(a);N_GUARD::QAB1(B),XB(a)
        • P(e);OGATEB,SBLOCK::QAB(B)
        • B(a);N_GUARD::QAB1(B)
        • P(b);N_GUARD::S(C)
        • P(c);N_GUARD::QAR1(B)
      • Refutation
        • B(a);
    • Try
      • Q(B);CHECK
      • Refutation
        • B(a);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • R1(F),XP(c)
    • Vars
      • K(d);P_SPINP(c),S_FLIGHT::R1(F),XP(c)
      • K(d);P-FLIGHT::QAR2(B)
      • P(c);::R1(F)
      • P(e);OGATEB,SBLOCK::QAB(B)
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