MESON Chess Problem Database

Problem Display
PID: 152510 (rq3r2/7P/1bp3PK/2p5/R1N2k2/2p2N1p/n6P/3QR1nB w - - 0 1)

Andrew, Frederick William

Hampstead and Highgate Express, 1898

(First published on Sat Oct 1 1898)

rq3r2/7P/1bp3PK/2p5/R1N2k2/2p2N1p/n6P/3QR1nB

#2

10 + 11

14867 BCPS Library 2014
15351 SCPF/BCPS Black Books 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Kg4
      • 2.Se3#
    • 1...Sxf3
      • 2.Qxf3#
  • Tries
    • 1.Sd6+?
      • 1...Sb4
        • 2.Re4#
      • 1...c4
        • 2.Re4#
      • 1...Rxa4!
    • 1.Qc1+?
      • 1...Kg4
        • 2.Se3#
        • 2.Qg5#
      • 1...Kf5
        • 2.Qg5#
      • 1...Sxc1!
    • 1.Qd2+?
      • 1...Kg4
        • 2.Se3#
        • 2.Qg5#
      • 1...Kf5
        • 2.Qg5#
      • 1...cxd2!
    • 1.Qd4+?
      • 1...Kf5
        • 2.Sh4#
      • 1...cxd4!
    • 1.Qd6+?
      • 1...Kg4
        • 2.Se3#
      • 1...Kf5
        • 2.Se3#
      • 1...Qxd6!
  • Keys
    • 1.Rf1!
      • threat
        • 2.Sxg1#
      • 1...Ke4
        • 2.Sg5#
      • 1...Kg4
        • 2.Se3#
      • 1...Kf5
        • 2.Sd4#
      • 1...Sxf3
        • 2.Qxf3#
      • 1...Se2
        • 2.Sfe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(e);P-FLIGHT::R(F)+S(G),DCHECK
    • S(a);OGATE,XS(E)::QAR1(A),XS(a)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • S(b);P_SPINS(b)::R1(B)
        • P(f);P_SPINP(f)::R1(B)
      • Refutation
        • R(i);XR(F)
    • Try
      • Q(A);CHECK
      • Vars
        • K(e);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • S(b);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(e);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • P(c);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(e);P-FLIGHT::S(E)
      • Refutation
        • P(f);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(e);P-FLIGHT::R(F)+S(G),DCHECK
        • K(e);P-FLIGHT::S(G)
      • Refutation
        • Q(j);P_PINP(H),XQ(A)
  • Actual
    • R(B);
    • Threat
      • R(B)+S(E),XS(a)
    • Vars
      • K(e);P-FLIGHT::B(C)+S(E),DCHECK
      • K(e);P-FLIGHT::R(F)+S(G),DCHECK
      • K(e);P-FLIGHT::R(B)+S(E),DCHECK
      • S(a);OGATE,P_SPINS(a),XS(E)::QAR1(A),XS(a)
      • S(a);N_GUARD::R(B)+S(E)
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