MESON Chess Problem Database

Problem Display
PID: 268299 (6b1/2N5/2p1qp2/1pb5/nn1kP1pr/B6p/1PRNP2Q/3K4 w - - 0 1)

Lawton, Howard

Sunday Referee, 1929

(First published on Sun Mar 24 1929)

6b1/2N5/2p1qp2/1pb5/nn1kP1pr/B6p/1PRNP2Q/3K4

#2

9 + 12

15239 Valois Notebooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5
      • 2.Qg1#
      • 2.Qf2#
  • Tries
    • 1.Sxb5+?
      • 1...Ke3
        • 2.Qg3#
      • 1...cxb5!
    • 1.Sxe6+?
      • 1...Ke3
        • 2.Qg1#
        • 2.Qg3#
        • 2.Qf4#
      • 1...Bxe6!
    • 1.e3+?
      • 1...Kd3
        • 2.Qe2#
      • 1...Kxe3!
  • Keys
    • 1.Qf4!
      • threat
        • 2.e5#
      • 1...Sxb2+
        • 2.Bxb2#
      • 1...Sc3+
        • 2.bxc3#
      • 1...Qxe4
        • 2.Qxe4#
      • 1...Qd5
        • 2.exd5#
      • 1...Qf5
        • 2.exf5#
      • 1...Qe5
        • 2.Qf2#
      • 1...Bh7
        • 2.Sxe6#
      • 1...Sd3
        • 2.e3#
      • 1...Sd5
        • 2.Sb3#
      • 1...g3
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(I);CHECK,XP(g)
      • Vars
        • K(d);S_CUTP(i),S_FLIGHT::QAR2(F)
      • Refutation
        • P(i);XS(I)
    • Try
      • S(I);CHECK,XQ(j)
      • Refutation
        • B(l);XS(I)
    • Try
      • P(E);CHECK
      • Vars
        • K(d);N_GUARD,P-FLIGHT::QAB1(F)
      • Refutation
        • K(d);S_FLIGHT,XP(E)
  • Actual
    • Q(F);
    • Threat
      • QAR(F)+P(H)
    • Vars
      • S(b);CHECK,OGATE,XP(B)::B(G),XS(b)
      • S(b);CHECK,OGATE::P(B),XS(b)
      • Q(j);OGATE,P_SPINQ(j),XP(H)::QAR1(F),XQ(j)
      • Q(j);OGATE::QAR(F)+P(H),XQ(j)
      • Q(j);SBLOCK::QAB(F)
      • B(l);N_GUARD::S(I),XQ(j)
      • S(c);SBLOCK::P(E)
      • S(c);S_CUTQ(j)::S(D)
      • P(e);N_GUARD::S(D)
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