MESON Chess Problem Database

Problem Display
PID: 234492 (8/6p1/4N1K1/3B4/3Q2P1/6nk/8/4BnR1 w - - 0 1)

Palkoska, Emil

Skakbladet, 1928

8/6p1/4N1K1/3B4/3Q2P1/6nk/8/4BnR1

#2

7 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sg5+?
      • 1...Kh2
        • 2.Qf2#
      • 1...Kh4!
    • 1.Bg2+?
      • 1...Kh4
        • 2.g5#
      • 1...Kh2!
    • 1.Rxg3+?
      • 1...Kh2
        • 2.Qg1#
        • 2.Qf2#
      • 1...Kh4
        • 2.g5#
      • 1...Sxg3!
  • Keys
    • 1.Qe5!
      • 1...Kh2
        • 2.Rh1#
      • 1...Kxg4
        • 2.Qh5#
      • 1...Kh4
        • 2.Qh5#
      • 1...Sd2
        • 2.Qxg3#
      • 1...Sh2
        • 2.Qxg3#
      • 1...Se3
        • 2.Qxg3#
      • 1...Sh1
        • 2.Sg5#
        • 2.Qh5#
      • 1...Se2
        • 2.Sg5#
        • 2.Qh5#
      • 1...Se4
        • 2.Qh5#
      • 1...Sf5
        • 2.Sg5#
      • 1...Sh5
        • 2.Sg5#
        • 2.Qxh5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR2(C)
      • Refutation
        • K(c);P-FLIGHT,P_SPINS(b)
    • Try
      • B(E);CHECK
      • Vars
        • K(c);P-FLIGHT,P_SPINS(b)::QAR(C)+P(D)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(B);CHECK,XS(b)
      • Vars
        • K(c);P-FLIGHT::QAR(C)+P(D)
      • Refutation
        • S(a);XR(B)
  • Actual
    • Q(C);
    • Vars
      • K(c);P-FLIGHT,P_SPINS(b)::R1(B)
      • K(c);P_SPINS(b),S_FLIGHT,XP(D)::QAB1(C)
      • K(c);P-FLIGHT,P_SPINS(b)::QAR1(C)
      • S(a);N_GUARD::QAR1(C),XS(b)
      • S(b);N_GUARD::QAR2(C)
      • S(b);::S(F)
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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).