MESON Chess Problem Database

Problem Display
PID: 187792 (8/8/8/8/1Q6/6K1/3pp1P1/2B1k3 w - - 0 1)

Markx, BJM

Deutsches Wochenschach, 1909

8/8/8/8/1Q6/6K1/3pp1P1/2B1k3

#2

4 + 3

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kd1
      • 2.Qxd2#
  • Tries
    • 1.Kf3?
      • 1...Kd1
        • 2.Qxd2#
      • 1...Kf1!
    • 1.Ba3?
      • 1...Kd1
        • 2.Qb1#
      • 1...Kf1!
    • 1.Qc3?
      • 1...Kd1
        • 2.Qxd2#
      • 1...Kf1!
    • 1.Qa5?
      • 1...Kd1
        • 2.Qxd2#
      • 1...Kf1!
    • 1.Qc5?
      • threat
        • 2.Qg1#
      • 1...Kf1
        • 2.Qf2#
      • 1...dxc1Q
        • 2.Qxc1#
      • 1...dxc1S
        • 2.Qxc1#
      • 1...dxc1B
        • 2.Qxc1#
      • 1...dxc1R
        • 2.Qxc1#
      • 1...Kd1!
  • Keys
    • 1.Qf4!
      • 1...Kd1
        • 2.Qxd2#
      • 1...dxc1Q
        • 2.Qxc1#
      • 1...dxc1S
        • 2.Qxc1#
      • 1...dxc1B
        • 2.Qxc1#
      • 1...dxc1R
        • 2.Qxc1#
      • 1...d1Q
        • 2.Qf2#
      • 1...d1S
        • 2.Bd2#
      • 1...d1B
        • 2.Bd2#
        • 2.Qf2#
      • 1...d1R
        • 2.Qf2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINP(b),P-FLIGHT::QAR1(D),XP(b)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAR1(D),XP(b)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT
    • Try
      • B(A);
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAR2(D)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAR1(D),XP(b)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAR1(D),XP(b)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT
    • Try
      • Q(D);N_PINP(b)
      • Threat
        • QAR2(D)
      • Vars
        • K(a);P-FLIGHT::QAR1(D)
        • P(b);OGATE,XB(A)::QAR2(D),XQ(b)
        • P(b);OGATE,XB(A)::QAR2(D),XS(b)
        • P(b);OGATE,XB(A)::QAR2(D),XB(b)
        • P(b);OGATE,XB(A)::QAR2(D),XR(b)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(D);N_PINP(b)
    • Vars
      • K(a);P-FLIGHT::QAR1(D),XP(b)
      • P(b);OGATE,XB(A)::QAR2(D),XQ(b)
      • P(b);OGATE,XB(A)::QAR2(D),XS(b)
      • P(b);OGATE,XB(A)::QAR2(D),XB(b)
      • P(b);OGATE,XB(A)::QAR2(D),XR(b)
      • P(b);SBLOCK::QAB1(D)
      • P(b);SBLOCK::B(A)
HTML5 logo

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).