MESON Chess Problem Database

Problem Display
PID: 214554 (4B2B/4P3/4pq1p/2K1k2P/4P3/3PP1R1/8/8 w - - 0 1)

Abraham, Victor

Cincinnati Commercial, 1879

4B2B/4P3/4pq1p/2K1k2P/4P3/3PP1R1/8/8

#2

9 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qg7
      • 2.Bxg7#
  • Tries
    • 1.Kc6?
      • 1...Qg7
        • 2.Bxg7#
      • 1...Qxh8!
    • 1.Ba4?
      • 1...Qg7
        • 2.Bxg7#
      • 1...Qxh8!
    • 1.Bb5?
      • 1...Qg7
        • 2.Bxg7#
      • 1...Qxh8!
    • 1.Bc6?
      • threat
        • 2.d4#
      • 1...Qg7
        • 2.Bxg7#
      • 1...Qxh8!
    • 1.Bg6?
      • threat
        • 2.d4#
      • 1...Qg7
        • 2.Bxg7#
      • 1...Qxh8!
    • 1.Bd7?
      • 1...Qg7
        • 2.Bxg7#
      • 1...Qxh8!
    • 1.Bf7?
      • 1...Qg7
        • 2.Bxg7#
      • 1...Qxh8!
    • 1.Rg1?
      • 1...Qg7
        • 2.Bxg7#
      • 1...Qxh8!
    • 1.Rg2?
      • 1...Qg7
        • 2.Bxg7#
      • 1...Qxh8!
    • 1.Rf3?
      • threat
        • 2.Bxf6#
      • 1...Qg7
        • 2.Bxg7#
      • 1...Qxh8!
    • 1.Rh3?
      • 1...Qg7
        • 2.Bxg7#
      • 1...Qxh8!
    • 1.Rg4?
      • threat
        • 2.d4#
      • 1...Qg7
        • 2.Bxg7#
      • 1...Qxh8!
    • 1.Rg6?
      • threat
        • 2.Bxf6#
      • 1...Qg7
        • 2.Bxg7#
      • 1...Qxh8!
    • 1.Rg8?
      • 1...Qg7
        • 2.Bxg7#
      • 1...Qxh8!
  • Keys
    • 1.Rg7!
      • 1...Qxe7+
        • 2.Rxe7#
      • 1...Qxg7
        • 2.Bxg7#
      • 1...Qh4
        • 2.Rg5#
      • 1...Qg5
        • 2.Rxg5#
      • 1...Qf1
        • 2.Rg5#
      • 1...Qf2
        • 2.Rg5#
      • 1...Qf3
        • 2.Rg5#
      • 1...Qf4
        • 2.Rg5#
      • 1...Qf5
        • 2.Rg5#
      • 1...Qg6
        • 2.Rxg6#
      • 1...Qf7
        • 2.Rg5#
        • 2.Rxf7#
      • 1...Qf8
        • 2.Rg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • Q(c);OGATEB::B(I),XQ(c)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Vars
        • Q(c);OGATEB::B(I),XQ(c)
      • Refutation
        • Q(c);N_SPINQ(c),XB(I)
    • Try
      • B(H);
      • Vars
        • Q(c);OGATEB::B(I),XQ(c)
      • Refutation
        • Q(c);N_SPINQ(c),XB(I)
    • Try
      • B(H);
      • Vars
        • Q(c);OGATEB::B(I),XQ(c)
      • Refutation
        • Q(c);N_SPINQ(c),XB(I)
    • Try
      • B(H);
      • Threat
        • P(A)
      • Vars
        • Q(c);OGATEB::B(I),XQ(c)
      • Refutation
        • Q(c);N_SPINQ(c),XB(I)
    • Try
      • B(H);
      • Threat
        • P(A)
      • Vars
        • Q(c);OGATEB::B(I),XQ(c)
      • Refutation
        • Q(c);N_SPINQ(c),XB(I)
    • Try
      • B(H);
      • Vars
        • Q(c);OGATEB::B(I),XQ(c)
      • Refutation
        • Q(c);N_SPINQ(c),XB(I)
    • Try
      • B(H);
      • Vars
        • Q(c);OGATEB::B(I),XQ(c)
      • Refutation
        • Q(c);N_SPINQ(c),XB(I)
    • Try
      • R(C);
      • Vars
        • Q(c);OGATEB::B(I),XQ(c)
      • Refutation
        • Q(c);N_SPINQ(c),XB(I)
    • Try
      • R(C);
      • Vars
        • Q(c);OGATEB::B(I),XQ(c)
      • Refutation
        • Q(c);N_SPINQ(c),XB(I)
    • Try
      • R(C);
      • Threat
        • B(I),XQ(c)
      • Vars
        • Q(c);OGATEB::B(I),XQ(c)
      • Refutation
        • Q(c);N_SPINQ(c),XB(I)
    • Try
      • R(C);
      • Vars
        • Q(c);OGATEB::B(I),XQ(c)
      • Refutation
        • Q(c);N_SPINQ(c),XB(I)
    • Try
      • R(C);
      • Threat
        • P(A)
      • Vars
        • Q(c);OGATEB::B(I),XQ(c)
      • Refutation
        • Q(c);N_SPINQ(c),XB(I)
    • Try
      • R(C);
      • Threat
        • B(I),XQ(c)
      • Vars
        • Q(c);OGATEB::B(I),XQ(c)
      • Refutation
        • Q(c);N_SPINQ(c),XB(I)
    • Try
      • R(C);
      • Vars
        • Q(c);OGATEB::B(I),XQ(c)
      • Refutation
        • Q(c);N_SPINQ(c),XB(I)
  • Actual
    • R(C);N_PINQ(c)
    • Vars
      • Q(c);CHECK,OGATE,XP(G)::B(I)+R(C),XQ(c)
      • Q(c);OGATE,P_SPINQ(c),XR(C)::B(I),XQ(c)
      • Q(c);::B(I)+R(C),DCHECK
      • Q(c);::B(I)+R(C),DCHECK,XQ(c)
      • Q(c);P_PINP(B)::B(I)+R(C),DCHECK
      • Q(c);S_CUTP(d)::B(I)+R(C)
      • Q(c);OGATEB::B(I)+R(C),XQ(c)
      • Q(c);P_PINP(G)::B(I)+R(C),DCHECK
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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).