MESON Chess Problem Database

Problem Display
PID: 21978 (2nbn3/q2P2QK/p2k1p1B/4NP2/B1Pp4/8/4RPP1/1R1r4 w - - 0 1)

Anderson, Gerald Frank

Kipping, Cyril Stanley

Western Morning News, 1922

(First published on Sat Jul 29 1922)

2nbn3/q2P2QK/p2k1p1B/4NP2/B1Pp4/8/4RPP1/1R1r4

#2

12 + 9

2740 Adventures of my Chessmen 1924
15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kc7
      • 2.dxe8S#
    • 1...Qc5
      • 2.dxe8S#
    • 1...fxe5
      • 2.Qxe5#
  • Tries
    • 1.Sd3?
      • threat
        • 2.Bf4#
        • 2.Qg3#
        • 2.dxc8S#
        • 2.dxe8S#
      • 1...Kc7
        • 2.dxe8S#
      • 1...Qxd7
        • 2.Bf4#
        • 2.Qxd7#
      • 1...Sxg7
        • 2.Bf4#
      • 1...Qc5
        • 2.dxe8S#
      • 1...Qb8
        • 2.Bf4#
        • 2.Qg3#
        • 2.dxe8S#
      • 1...Qb7
        • 2.Bf4#
        • 2.Qg3#
        • 2.dxe8S#
      • 1...Qc7
        • 2.Bf4#
        • 2.Re6#
        • 2.Qg3#
        • 2.dxe8S#
      • 1...Qa8
        • 2.Bf4#
        • 2.Qg3#
        • 2.dxe8S#
      • 1...Rh1
        • 2.Qg3#
        • 2.dxc8S#
        • 2.dxe8S#
      • 1...Be7
        • 2.Bf4#
        • 2.Qg3#
        • 2.dxe8S#
      • 1...Sb6
        • 2.Bf4#
        • 2.Qg3#
        • 2.dxe8S#
      • 1...Se7
        • 2.Bf4#
        • 2.Qg3#
        • 2.dxe8S#
      • 1...Sc7
        • 2.Bf4#
        • 2.Qg3#
        • 2.dxc8S#
      • 1...Rxd3!
    • 1.Sf7+?
      • 1...Kc7
        • 2.dxe8S#
      • 1...Kc5!
  • Keys
    • 1.Qg3!
      • threat
        • 2.Sd3#
      • 1...Qxd7+
        • 2.Sxd7#
      • 1...Kc5
        • 2.Qa3#
      • 1...Kc7
        • 2.dxe8S#
      • 1...Ke7
        • 2.dxc8S#
      • 1...fxe5
        • 2.Qxe5#
      • 1...Qc5
        • 2.Sf7#
      • 1...Rd3
        • 2.Sxd3#
      • 1...d3
        • 2.Sxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(d);S_FLIGHT::PXS(i)=S
    • Q(f);SBLOCK::PXS(i)=S
    • P(e);OGATE,XS(G)::QAB1(K),XP(e)
  • Tries
    • Try
      • S(G);
      • Threat
        • DUALS(4)
      • Vars
        • K(d);S_FLIGHT::PXS(i)=S
        • S(i);XQ(K)::B(I)
        • Q(f);::PXS(i)=S
      • Refutation
        • R(a);XS(G)
    • Try
      • S(G);CHECK
      • Vars
        • K(d);S_FLIGHT::PXS(i)=S
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(K);P_SPINP(J)
    • Threat
      • QAB(K)+S(G)
    • Vars
      • Q(f);CHECK,XP(J)::QAB(K)+S(G),XQ(f)
      • K(d);S_FLIGHT::QAB(K)
      • K(d);N_PINP(J),S_FLIGHT::PXS(i)=S
      • K(d);N_PINP(J),S_FLIGHT::PXS(g)=S
      • P(e);OGATE,P_SPINP(e),XS(G)::QAB1(K),XP(e)
      • Q(f);N_PINP(J),SBLOCK::QAB(K)+S(G),DCHECK
      • R(a);::QAB(K)+S(G),XR(a)
      • P(b);::QAB(K)+S(G),XP(b)
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