MESON Chess Problem Database

Problem Display
PID: 195773 (bN1q4/3N4/p2p4/3k1BR1/2p1p3/4P2P/1Q1Pn3/4K3 w - - 0 1)

Sero, ?

Western Daily Mercury, 1917

(First published on Fri Dec 21 1917)

bN1q4/3N4/p2p4/3k1BR1/2p1p3/4P2P/1Q1Pn3/4K3

#2

9 + 8

15239 Valois Notebooks 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qa5
      • 2.Bg4#
    • 1...Qb6
      • 2.Bg4#
    • 1...Qc7
      • 2.Bg4#
    • 1...Qxd7
      • 2.Bxd7#
    • 1...Qc8
      • 2.Bg4#
    • 1...Bb7
      • 2.Qxb7#
    • 1...Sc1
      • 2.Qd4#
    • 1...Sg1
      • 2.Qd4#
    • 1...Sg3
      • 2.Qd4#
    • 1...Sd4
      • 2.Qxd4#
    • 1...Sf4
      • 2.Qd4#
    • 1...c3
      • 2.Qa2#
      • 2.Qb3#
    • 1...a5
      • 2.Qb5#
  • Tries
    • 1.Sb6+?
      • 1...Qxb6
        • 2.Bg4#
        • 2.Bd7#
        • 2.Bc8#
      • 1...Kc5!
    • 1.Bg6+?
      • 1...Qxg5
        • 2.Bf7#
      • 1...Ke6!
  • Keys
    • 1.Qb6!
      • 1...Qxg5
        • 2.Qa5#
      • 1...Qxb6
        • 2.Bg4#
      • 1...Qxd7
        • 2.Bxd7#
      • 1...Qxb8
        • 2.Bg4#
      • 1...c3
        • 2.Qb3#
      • 1...Bc6
        • 2.Qxc6#
      • 1...Qf6
        • 2.Qa5#
      • 1...Qc7
        • 2.Bg4#
      • 1...Qe7
        • 2.Qa5#
      • 1...Qc8
        • 2.Bg4#
      • 1...Qe8
        • 2.Qa5#
      • 1...Qf8
        • 2.Qa5#
      • 1...Qg8
        • 2.Qa5#
      • 1...Qh8
        • 2.Qa5#
      • 1...Bb7
        • 2.Qxb7#
      • 1...Sc1
        • 2.Qd4#
      • 1...Sg1
        • 2.Qd4#
      • 1...Sc3
        • 2.Qd4#
      • 1...Sg3
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sf4
        • 2.Qd4#
      • 1...a5
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 1
  • Sets
    • Q(h);N_GUARD,P_PINP(C)::R(G)+B(F)
    • Q(h);N_GUARD::R(G)+B(F)
    • Q(h);OGATE,XS(H)::R(G)+B(F),XQ(h)
    • B(g);N_GUARD::QAB(B),XB(g)
    • S(a);N_GUARD::QAR1(B)
    • S(a);N_GUARD::QAR1(B),XS(a)
    • P(e);N_GUARD::QAR2(B)
  • Tries
    • Try
      • S(H);CHECK
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • B(F);CHECK
      • Vars
        • Q(h);XR(G)::B(F)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • Q(h);N_GUARD,XR(G)::QAR(B)
      • Q(h);N_GUARD,XQ(B)::R(G)+B(F)
      • Q(h);OGATE,XS(H)::R(G)+B(F),XQ(h)
      • Q(h);N_GUARD,XS(I)::R(G)+B(F)
      • P(b);OGATEB::QAB(B)
      • B(g);N_GUARD::QAB1(B),XB(g)
      • Q(h);N_GUARD::QAR(B)
      • Q(h);N_GUARD::R(G)+B(F)
      • B(g);N_GUARD::QAB(B),XB(g)
      • S(a);N_GUARD::QAR1(B)
      • S(a);N_GUARD::QAR1(B),XS(a)
      • P(e);N_GUARD::QAR2(B)
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