MESON Chess Problem Database

Problem Display
PID: 148351 (2n2QB1/3p4/3p1KPB/1p6/NRbkp2n/2p2p2/3b1N2/3R4 w - - 0 1)

Dawson, Thomas Rayner

Northern Whig, 1912

(First published on Thu Aug 29 1912)

2n2QB1/3p4/3p1KPB/1p6/NRbkp2n/2p2p2/3b1N2/3R4

#2

9 + 11

15256 TRD Scrapbook 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Sa7
      • 2.Qxd6#
    • 1...c2
      • 2.Rxd2#
    • 1...bxa4
      • 2.Rxc4#
    • 1...d5
      • 2.Qc5#
  • Tries
    • 1.Qe7?
      • threat
        • 2.Qxe4#
      • 1...bxa4
        • 2.Rxc4#
      • 1...e3
        • 2.Bxe3#
        • 2.Qxe3#
        • 2.Qe4#
      • 1...d5
        • 2.Qc5#
        • 2.Qe5#
      • 1...Sxe7!
    • 1.Qe8?
      • threat
        • 2.Qxe4#
      • 1...bxa4
        • 2.Rxc4#
      • 1...e3
        • 2.Bxe3#
        • 2.Qxe3#
        • 2.Qe4#
      • 1...d5
        • 2.Qe5#
      • 1...Se7!
  • Keys
    • 1.Qg7!
      • 1...Sxg6
        • 2.Kxg6#
      • 1...bxa4
        • 2.Rxc4#
      • 1...Sg2
        • 2.Kf5#
      • 1...Sf5
        • 2.Kxf5#
      • 1...Sb6
        • 2.Ke7#
      • 1...Sa7
        • 2.Ke7#
      • 1...Se7
        • 2.Kxe7#
      • 1...c2
        • 2.Rxd2#
      • 1...e3
        • 2.Kg5#
      • 1...d5
        • 2.Kf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(k);N_GUARD::QAR2(H),XP(i)
    • P(b);N_GUARD::R(A),XB(a)
    • P(h);N_GUARD,XS(C)::R1(D),XB(d)
    • P(i);OGATE::QAB1(H)
  • Tries
    • Try
      • Q(H);
      • Threat
        • QAR1(H),XP(f)
      • Vars
        • P(h);N_GUARD,XS(C)::R1(D),XB(d)
      • Refutation
        • S(k);XQ(H)
    • Try
      • Q(H);
      • Threat
        • QAR1(H),XP(f)
      • Vars
        • P(h);N_GUARD,XS(C)::R1(D),XB(d)
        • P(i);N_GUARD::QAB1(H)
      • Refutation
        • S(k);
  • Actual
    • Q(H);
    • Vars
      • S(g);XP(F)::QAB(H)+K(E),XS(g)
      • P(h);N_GUARD,XS(C)::R1(D),XB(d)
      • S(g);::QAB(H)+K(E)
      • S(g);::QAB(H)+K(E),XS(g)
      • S(k);::QAB(H)+K(E)
      • S(k);::QAB(H)+K(E),XS(k)
      • P(b);N_GUARD::R(A),XB(a)
      • P(f);SBLOCK::QAB(H)+K(E)
      • P(i);SBLOCK::QAB(H)+K(E)
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