MESON Chess Problem Database

Problem Display
PID: 5012 (3r4/3p3B/3RN3/2p1k3/5N2/8/5Q2/4K3 w - - 0 1)

Bonner Feast, Frederick

Birmingham Post, 1897

3r4/3p3B/3RN3/2p1k3/5N2/8/5Q2/4K3

#2

6 + 4

5501 Chess Cameos 1936

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd6
      • 2.Qxc5#
    • 1...Kf6
      • 2.Sg6#
    • 1...c4
      • 2.Qd4#
    • 1...dxe6
      • 2.Rxe6#
  • Tries
    • 1.Sh5?
      • threat
        • 2.Qg3#
        • 2.Qxc5#
        • 2.Qh2#
        • 2.Qf4#
      • 1...Rc8
        • 2.Qg3#
        • 2.Qh2#
        • 2.Qf4#
      • 1...Rf8
        • 2.Qxc5#
      • 1...Rg8
        • 2.Qxc5#
        • 2.Qf4#
      • 1...c4
        • 2.Qg3#
        • 2.Qd4#
        • 2.Qc5#
        • 2.Qh2#
        • 2.Qf4#
      • 1...Kxd6!
    • 1.Sg6+?
      • 1...Ke4
        • 2.Sxc5#
        • 2.Sg5#
        • 2.Qf4#
      • 1...Kxd6!
    • 1.Ra6?
      • threat
        • 2.Qb2#
      • 1...Kf6
        • 2.Sg6#
      • 1...dxe6
        • 2.Rxe6#
      • 1...c4
        • 2.Qd4#
      • 1...d5
        • 2.Sd3#
      • 1...Rb8!
    • 1.Qe3+?
      • 1...Kxd6
        • 2.Qxc5#
      • 1...Kf6!
  • Keys
    • 1.Rb6!
      • threat
        • 2.Qb2#
      • 1...Kf6
        • 2.Sg6#
      • 1...dxe6
        • 2.Rxe6#
      • 1...c4
        • 2.Qd4#
      • 1...d5
        • 2.Sd3#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(b);S_FLIGHT,XR(D)::QAB1(B),XP(a)
    • K(b);S_FLIGHT::QAR(B)+S(C)
    • P(a);N_GUARD::QAB1(B)
    • P(c);OGATE,XS(E)::R1(D),XP(c)
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(4)
      • Vars
        • R(d);::QAR2(B),XP(a)
      • Refutation
        • K(b);S_FLIGHT,XR(D)
    • Try
      • S(C);CHECK
      • Refutation
        • K(b);S_FLIGHT,XR(D)
    • Try
      • R(D);
      • Threat
        • QAB(B)
      • Vars
        • K(b);S_FLIGHT::QAR(B)+S(C)
        • P(c);OGATE,XS(E)::R1(D),XP(c)
        • P(a);N_GUARD::QAB1(B)
        • P(c);SBLOCK::S(C)
      • Refutation
        • R(d);
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);S_FLIGHT,XR(D)::QAB1(B),XP(a)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • R(D);
    • Threat
      • QAB(B)
    • Vars
      • K(b);S_FLIGHT::QAR(B)+S(C)
      • P(c);OGATE,XS(E)::R1(D),XP(c)
      • P(a);N_GUARD::QAB1(B)
      • P(c);SBLOCK::S(C)
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