MESON Chess Problem Database

Problem Display
PID: 21411 (8/4n1pB/5br1/1R2p2N/2p1k3/6BP/2P3n1/3Q1NKb w - - 0 1)

Bernard, Henry D'Oyly

Western Daily Mercury, 1918

(First published on Fri Dec 13 1918)

8/4n1pB/5br1/1R2p2N/2p1k3/6BP/2P3n1/3Q1NKb

#2

9 + 9

3360 Simple Two-move Themes 1924
15239 Valois Notebooks 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qg4#
    • 1...Bh4
      • 2.Rxe5#
    • 1...Bg5
      • 2.Rxe5#
    • 1...Se1
      • 2.Qg4#
    • 1...Sh4
      • 2.Qg4#
    • 1...Sd5
      • 2.Bxg6#
    • 1...Sf5
      • 2.Qd5#
    • 1...Sc6
      • 2.Bxg6#
    • 1...Sc8
      • 2.Bxg6#
    • 1...Sg8
      • 2.Bxg6#
    • 1...c3
      • 2.Qd3#
  • Tries
    • 1.Sd2+?
      • 1...Ke3
        • 2.Bf2#
      • 1...Kf5
        • 2.Qg4#
      • 1...Kd4!
    • 1.Bf2?
      • threat
        • 2.Sfg3#
      • 1...Kf5
        • 2.Qg4#
      • 1...Sf5
        • 2.Sd2#
        • 2.Qd5#
      • 1...Bh4!
    • 1.Bxg6+?
      • 1...Sf5
        • 2.Qd5#
      • 1...Sxg6!
    • 1.Qf3+?
      • 1...Kd4
        • 2.c3#
      • 1...Kxf3!
  • Keys
    • 1.Bh2!
      • 1...Se1+
        • 2.Qg4#
      • 1...Se3+
        • 2.Sfg3#
      • 1...Sf4+
        • 2.Shg3#
      • 1...Sh4+
        • 2.Qg4#
      • 1...Kf5
        • 2.Qg4#
      • 1...Bh4
        • 2.Rxe5#
      • 1...Bg5
        • 2.Rxe5#
      • 1...Sd5
        • 2.Bxg6#
      • 1...Sf5
        • 2.Qd5#
      • 1...Sc6
        • 2.Bxg6#
      • 1...Sc8
        • 2.Bxg6#
      • 1...Sg8
        • 2.Bxg6#
      • 1...c3
        • 2.Qd3#

This is after

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(d);P_SPINP(e),S_FLIGHT::QAB1(A)
    • B(f);N_GUARD::R1(G),XP(e)
    • S(b);N_GUARD,P_PINB(E)::QAR2(A)
    • S(h);N_GUARD::B(I),XR(g)
    • S(h);N_GUARD,N_SPINR(g),SBLOCK::QAB1(A)
    • P(c);N_GUARD::QAB1(A)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(d);N_SPINR(g),P-FLIGHT::B(E)
        • K(d);P_SPINP(e),S_FLIGHT::QAB1(A)
      • Refutation
        • K(d);N_SPINR(g),P-FLIGHT
    • Try
      • B(E);
      • Threat
        • S(B)
      • Vars
        • K(d);P_SPINP(e),S_FLIGHT::QAB1(A)
      • Refutation
        • B(f);
    • Try
      • B(I);CHECK,XR(g)
      • Vars
        • S(h);P_SPINS(h)::QAB1(A)
      • Refutation
        • S(h);XB(I)
    • Try
      • Q(A);CHECK
      • Vars
        • K(d);N_SPINR(g),P-FLIGHT::P(D)
      • Refutation
        • K(d);N_SPINR(g),S_FLIGHT,XQ(A)
  • Actual
    • B(E);
    • Vars
      • S(b);CHECK,N_GUARD::QAR2(A)
      • S(b);CHECK,SBLOCK::S(B)
      • S(b);CHECK,SBLOCK::S(H)
      • K(d);P_SPINP(e),S_FLIGHT::QAB1(A)
      • B(f);N_GUARD::R1(G),XP(e)
      • S(h);N_GUARD::B(I),XR(g)
      • S(h);N_GUARD,N_SPINR(g),SBLOCK::QAB1(A)
      • P(c);N_GUARD::QAB1(A)
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