MESON Chess Problem Database

Problem Display
PID: 183130 (5bn1/3NpbqB/7p/3P1p1P/RQP1k3/K1p1P1R1/1P2P3/5N2 w - - 0 1)

Charlick, Arthur Robert Baker

2nd Prize, Western Daily Mercury, 1907

5bn1/3NpbqB/7p/3P1p1P/RQP1k3/K1p1P1R1/1P2P3/5N2

#2

13 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Rg4#
    • 1...Qe5
      • 2.Sc5#
    • 1...Qf6
      • 2.Rg4#
    • 1...Qh8
      • 2.Rg4#
    • 1...Qg4
      • 2.Rxg4#
    • 1...cxb2
      • 2.Sd2#
    • 1...c2
      • 2.Sd2#
  • Tries
    • 1.Qd6?
      • threat
        • 2.Sc5#
        • 2.Qf4#
      • 1...Qxg3
        • 2.Sc5#
        • 2.c5#
      • 1...Qd4
        • 2.Rg4#
        • 2.Qf4#
      • 1...Qe5
        • 2.Sc5#
        • 2.Qxe5#
      • 1...Qg4
        • 2.Sc5#
        • 2.Rxg4#
        • 2.Qe5#
        • 2.c5#
      • 1...Qg5
        • 2.Sc5#
        • 2.Qe5#
        • 2.c5#
      • 1...e5
        • 2.Sc5#
        • 2.c5#
      • 1...e6
        • 2.Sc5#
      • 1...exd6!
    • 1.Qb3?
      • threat
        • 2.Qc2#
      • 1...e5+
        • 2.c5#
      • 1...Qd4
        • 2.Rg4#
      • 1...c2
        • 2.Sd2#
        • 2.Qxc2#
        • 2.Qd3#
      • 1...e6+!
    • 1.bxc3?
      • threat
        • 2.Sd2#
        • 2.Qb1#
      • 1...Qxg3
        • 2.Qb1#
      • 1...Qd4
        • 2.Rg4#
      • 1...e5
        • 2.Sd2#
      • 1...e6
        • 2.Sd2#
      • 1...Qxc3+!
    • 1.c5+?
      • 1...Qd4
        • 2.Qxd4#
      • 1...Kxd5!
  • Keys
    • 1.Qb7!
      • 1...e5+
        • 2.c5#
      • 1...e6+
        • 2.d6#
      • 1...Qxg3
        • 2.c5#
      • 1...Qxh7
        • 2.c5#
      • 1...Bxd5
        • 2.Qxd5#
      • 1...Bxh5
        • 2.d6#
      • 1...cxb2
        • 2.Sd2#
      • 1...Qd4
        • 2.Rg4#
      • 1...Qe5
        • 2.Sc5#
      • 1...Qf6
        • 2.Rg4#
      • 1...Qh8
        • 2.Rg4#
      • 1...Qg4
        • 2.Rxg4#
        • 2.c5#
      • 1...Qg5
        • 2.c5#
      • 1...Qg6
        • 2.c5#
      • 1...Be6
        • 2.dxe6#
      • 1...Bg6
        • 2.d6#
      • 1...Be8
        • 2.d6#
      • 1...Sf6
        • 2.c5#
      • 1...c2
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 1
  • Sets
    • Q(g);N_GUARD::R(F)
    • Q(g);SBLOCK::S(L)
    • Q(g);N_GUARD::R(F),XQ(g)
    • P(a);N_GUARD,XP(B)::S(A)
    • P(a);N_GUARD::S(A)
  • Tries
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • P(e);P_PINQ(H)::S(L)
      • Refutation
        • P(e);XQ(H)
    • Try
      • Q(H);
      • Threat
        • QAB(H)
      • Vars
        • P(e);CHECK,S_CUTQ(g)::R(G)+P(I)
        • Q(g);N_GUARD::R(F)
      • Refutation
        • P(e);CHECK
    • Try
      • P(B);XP(a)
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);XR(F)::QAB(H)
        • Q(g);N_GUARD::R(F)
        • P(e);P_PINQ(H)::S(A)
      • Refutation
        • Q(g);CHECK,XP(B)
    • Try
      • P(I);CHECK
      • Vars
        • Q(g);N_GUARD,P_SPINQ(g)::QAR1(H),XQ(g)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT,XP(J)
  • Actual
    • Q(H);
    • Vars
      • P(e);CHECK,S_CUTQ(g)::R(G)+P(I)
      • P(e);CHECK,S_CUTB(f)::QAB(H)+P(J)
      • Q(g);N_GUARD,XR(F)::R(G)+P(I)
      • Q(g);N_GUARD,N_SPINP(c),XB(M)::R(G)+P(I)
      • B(f);OGATE,P_SPINB(f),XP(J)::QAB1(H),XB(f)
      • B(f);N_GUARD,XP(K)::QAB(H)+P(J)
      • P(a);N_GUARD,XP(B)::S(A)
      • Q(g);N_GUARD::R(F)
      • Q(g);SBLOCK::S(L)
      • Q(g);N_GUARD::R(G)+P(I)
      • Q(g);N_GUARD,N_SPINP(c)::R(G)+P(I)
      • B(f);OGATE::QAB(H)+P(J),XB(f)
      • B(f);N_GUARD,N_SPINP(c)::QAB(H)+P(J)
      • B(f);N_GUARD::QAB(H)+P(J)
      • S(i);S_CUTQ(g)::R(G)+P(I)
      • P(a);N_GUARD::S(A)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).