MESON Chess Problem Database

Problem Display
PID: 266228 (6n1/3Bp1r1/1K1p4/3k2p1/3pp1N1/1PbR2P1/RpP1n3/1N5Q w - - 0 1)

Lawton, Howard

Sunday Referee, 1933

(First published on Sun Jun 25 1933)

6n1/3Bp1r1/1K1p4/3k2p1/3pp1N1/1PbR2P1/RpP1n3/1N5Q

#2

10 + 11

937 Sunday Referee 1937
15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.c4#
    • 1...Bd2
      • 2.c4#
    • 1...Bb4
      • 2.c4#
    • 1...Ba5+
      • 2.Rxa5#
    • 1...Sc1
      • 2.Sxc3#
    • 1...Sg1
      • 2.Sxc3#
    • 1...Sxg3
      • 2.Sxc3#
    • 1...Sf4
      • 2.Sxc3#
    • 1...e5
      • 2.Se3#
    • 1...e6
      • 2.Bc6#
  • Tries
    • 1.Bf5?
      • threat
        • 2.Qxe4#
      • 1...Ba5+
        • 2.Rxa5#
      • 1...Sxg3
        • 2.Sxc3#
      • 1...Sf6!
  • Keys
    • 1.Qh8!
      • 1...Ba5+
        • 2.Rxa5#
      • 1...Sxg3
        • 2.Sxc3#
      • 1...exd3
        • 2.Qh1#
      • 1...e3
        • 2.Qh1#
      • 1...Sf6
        • 2.Qa8#
      • 1...Rg6
        • 2.Se3#
      • 1...Rf7
        • 2.Se3#
      • 1...Rh7
        • 2.Se3#
      • 1...Be1
        • 2.c4#
      • 1...Bd2
        • 2.c4#
      • 1...Bb4
        • 2.c4#
      • 1...Sc1
        • 2.Sxc3#
      • 1...Sg1
        • 2.Sxc3#
      • 1...Sf4
        • 2.Sxc3#
      • 1...Sh6
        • 2.Qa8#
      • 1...e5
        • 2.Se3#
      • 1...e6
        • 2.Bc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • B(c);OGATE::P(D)
    • B(c);CHECK,N_GUARD::R(C),XB(c)
    • S(b);N_GUARD::S(A),XB(c)
    • S(b);N_GUARD,XP(G)::S(A),XB(c)
    • P(i);SBLOCK::S(H)
    • P(i);SBLOCK::B(J)
  • Tries
    • Try
      • B(J);
      • Threat
        • QAB1(B),XP(e)
      • Vars
        • B(c);CHECK,N_GUARD::R(C),XB(c)
        • S(b);N_GUARD,XP(G)::S(A),XB(c)
      • Refutation
        • S(k);
  • Actual
    • Q(B);
    • Vars
      • B(c);CHECK,N_GUARD::R(C),XB(c)
      • S(b);N_GUARD,XP(G)::S(A),XB(c)
      • P(e);N_SPINP(d),OGATEB,XR(F)::QAB(B)
      • P(e);OGATEB::QAB(B)
      • S(k);OGATE::QAB(B)
      • R(j);::S(H)
      • B(c);OGATE::P(D)
      • S(b);N_GUARD::S(A),XB(c)
      • P(i);SBLOCK::S(H)
      • P(i);SBLOCK::B(J)
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