MESON Chess Problem Database

Problem Display
PID: 160882 (8/8/5N2/1Q1Pq3/B1p1P3/P1k2P2/n7/b2R1K2 w - - 0 1)

Williams, Philip Hamilton

Hampstead and Highgate Express, 1905

8/8/5N2/1Q1Pq3/B1p1P3/P1k2P2/n7/b2R1K2

#2

9 + 5

15351 SCPF/BCPS Black Books 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe4
      • 2.Sxe4#
    • 1...Qxd5
      • 2.Sxd5#
    • 1...Sc1
      • 2.Qb4#
    • 1...Sb4
      • 2.Qxb4#
  • Tries
    • 1.Qxc4+?
      • 1...Kb2
        • 2.Qb3#
      • 1...Kxc4!
    • 1.Qb1?
      • threat
        • 2.Qc2#
        • 2.Qxa1#
      • 1...Qxe4
        • 2.Sxe4#
        • 2.Qxa1#
      • 1...Qb8
        • 2.Qc2#
      • 1...Bb2
        • 2.Qc2#
      • 1...Sb4
        • 2.Qxa1#
        • 2.Qxb4#
      • 1...Qh2!
    • 1.Qa5+?
      • 1...Sb4
        • 2.Qxb4#
      • 1...Kb2!
  • Keys
    • 1.Qb6!
      • 1...Qxf6
        • 2.Qxf6#
      • 1...Qxe4
        • 2.Sxe4#
      • 1...Qxd5
        • 2.Sxd5#
      • 1...Sb4
        • 2.Qxb4#
      • 1...Qh2
        • 2.Qd4#
      • 1...Qg3
        • 2.Qd4#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Qf4
        • 2.Qd4#
      • 1...Qd6
        • 2.Qd4#
      • 1...Qc7
        • 2.Qd4#
      • 1...Qb8
        • 2.Qd4#
      • 1...Qf5
        • 2.Qd4#
      • 1...Qg5
        • 2.Qd4#
      • 1...Qh5
        • 2.Qd4#
      • 1...Qe6
        • 2.Qd4#
      • 1...Qe7
        • 2.Qd4#
      • 1...Qe8
        • 2.Qd4#
      • 1...Bb2
        • 2.Qe3#
      • 1...Sc1
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 15
    • REMOVED MATES = 0
  • Sets
    • Q(e);XP(F)::S(I),XQ(e)
    • Q(e);XP(H)::S(I),XQ(e)
    • S(b);N_GUARD::QAB1(G)
    • S(b);N_GUARD::QAB1(G),XS(b)
  • Tries
    • Try
      • Q(G);CHECK,XP(d)
      • Vars
        • K(c);S_FLIGHT::QAR1(G)
      • Refutation
        • K(c);P-FLIGHT,XQ(G)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • Q(e);::QAR1(G)
        • B(a);::QAR1(G)
      • Refutation
        • Q(e);
    • Try
      • Q(G);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAB1(G),XS(b)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(G);
    • Vars
      • Q(e);OGATE,P_PINP(D),XS(I)::QAB(G),XQ(e)
      • Q(e);XP(F)::S(I),XQ(e)
      • Q(e);XP(H)::S(I),XQ(e)
      • S(b);N_GUARD::QAB1(G),XS(b)
      • Q(e);N_GUARD::QAB1(G)
      • Q(e);N_GUARD::QAB1(G),XQ(e)
      • Q(e);N_GUARD,P_PINP(D)::QAB1(G)
      • B(a);SBLOCK::QAR2(G)
      • S(b);N_GUARD::QAB1(G)
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