MESON Chess Problem Database

Problem Display
PID: 229153 (B5Q1/1q4RK/1b6/5p1p/3k4/Bp1pNpn1/3r2N1/8 w - - 0 1)

Hertmann, Sandor

Tijdschrift vd NSB, 1926

B5Q1/1q4RK/1b6/5p1p/3k4/Bp1pNpn1/3r2N1/8

#2

7 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Qc4#
    • 1...Qxg7+
      • 2.Qxg7#
  • Tries
    • 1.Qd5+?
      • 1...Kc3
        • 2.Qc4#
      • 1...Qxd5!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Re7#
      • 1...Qxg7+
        • 2.Qxg7#
      • 1...Kc3
        • 2.Rc7#
      • 1...Ke4
        • 2.Re7#
      • 1...Ke5
        • 2.Re7#
      • 1...Qxa8
        • 2.Rg4#
      • 1...Qd5
        • 2.Rg4#
      • 1...Qe4
        • 2.Rg4#
        • 2.Rd7#
      • 1...Qc6
        • 2.Rg4#
      • 1...Qc8
        • 2.Rg4#
        • 2.Rd7#
        • 2.Rg8#
      • 1...Qc7
        • 2.Rxc7#
        • 2.Rd7#
      • 1...Qe7
        • 2.Rxe7#
      • 1...Qf7
        • 2.Rxf7#
      • 1...Qb8
        • 2.Rg4#
        • 2.Rd7#
      • 1...Bc7
        • 2.Rg4#
      • 1...Se4
        • 2.Rd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • K(f);S_FLIGHT::QAR1(G)
    • Q(j);CHECK,OGATE,XR(D)::QAB(G),XQ(j)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • K(f);S_FLIGHT::QAR1(G)
      • Refutation
        • Q(j);N_PINR(D),XQ(G)
  • Actual
    • Q(G);
    • Threat
      • QAB(G)+R(D)
    • Vars
      • Q(j);CHECK,OGATE,P_SPINQ(j),XR(D)::QAB(G),XQ(j)
      • K(f);S_FLIGHT::QAB(G)+R(D),DCHECK
      • K(f);P-FLIGHT,P_SPINQ(j)::R(D)
      • Q(j);N_PINR(D),XB(F)::QAB(G)+R(D),DCHECK
      • Q(j);N_PINR(D)::QAB(G)+R(D),DCHECK
      • Q(j);::QAB(G)+R(D),XQ(j)
      • B(i);N_PINR(D)::QAB(G)+R(D),DCHECK
      • S(e);SBLOCK::QAB(G)+R(D),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).