MESON Chess Problem Database

Problem Display
PID: 181820 (K2RNkrn/p7/2P1P1p1/5qQb/6p1/6P1/8/5R2 w - - 0 1)

Skalik, Frantisek

HM., Armeeblatt, 1905

K2RNkrn/p7/2P1P1p1/5qQb/6p1/6P1/8/5R2

#2

8 + 8

6490 yacpdb 2018
5454 Near Snap 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf1
      • 2.Qc5#
    • 1...Qf2
      • 2.Qc5#
    • 1...Qf3
      • 2.Qc5#
    • 1...Qf4
      • 2.Qc5#
    • 1...Qf6
      • 2.Qc5#
    • 1...Qf7
      • 2.Qc5#
      • 2.e7#
    • 1...Rg7
      • 2.Sd6#
      • 2.Sc7#
    • 1...Sf7
      • 2.e7#
  • Tries
    • 1.Sf6+?
      • 1...Kg7
        • 2.Rxg8#
      • 1...Ke7!
    • 1.Rxf5+?
      • 1...Sf7
        • 2.Rxf7#
        • 2.e7#
      • 1...gxf5!
    • 1.Qf6+?
      • 1...Sf7
        • 2.Sd6#
        • 2.Sc7#
        • 2.Sg7#
        • 2.e7#
      • 1...Qxf6!
    • 1.Qh6+?
      • 1...Rg7
        • 2.Qxg7#
      • 1...Ke7!
    • 1.Qxf5+?
      • 1...Ke7
        • 2.Qf6#
      • 1...Sf7
        • 2.Qc5#
        • 2.Qxf7#
      • 1...gxf5!
  • Keys
    • 1.Kxa7!
      • 1...Qf2+
        • 2.Qc5#
      • 1...Qf7+
        • 2.e7#
      • 1...Rg7+
        • 2.Sc7#
      • 1...Qxf1
        • 2.Qc5#
      • 1...Qf6
        • 2.Qc5#
      • 1...Qf3
        • 2.Qc5#
      • 1...Qf4
        • 2.Qc5#
      • 1...Sf7
        • 2.e7#

This anticipates 104583(1923)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(b);N_SPINQ(b),OGATE,XR(A)::QAB(C)
    • Q(b);OGATE::QAB(C)
    • Q(b);OGATE,P_PINP(D)::QAB(C)
    • S(h);N_SPINQ(b),SBLOCK::P(E)
  • Tries
    • Try
      • S(H);CHECK,N_PINQ(b)
      • Vars
        • K(f);OGATE,P_PINR(G),P_SPINP(d),S_FLIGHT::R1(G),XR(g)
      • Refutation
        • K(f);P_PINR(G),S_FLIGHT
    • Try
      • R(A);CHECK,XQ(b)
      • Refutation
        • P(d);XR(A)
    • Try
      • Q(C);CHECK,N_PINQ(b)
      • Refutation
        • Q(b);P_SPINQ(b),XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • R(g);N_GUARD,P_SPINR(g)::QAB1(C),XR(g)
      • Refutation
        • K(f);N_SPINQ(b),S_FLIGHT
    • Try
      • Q(C);CHECK,XQ(b)
      • Vars
        • K(f);S_FLIGHT::QAB1(C)
      • Refutation
        • P(d);P_SPINP(d),XQ(C)
  • Actual
    • K(F);P-FLIGHT,XP(e)
    • Vars
      • Q(b);CHECK,OGATE::QAB(C)
      • Q(b);CHECK::P(E)
      • R(g);CHECK,SBLOCK::R(G)+S(H)
      • Q(b);N_SPINQ(b),OGATE,XR(A)::QAB(C)
      • Q(b);OGATE::QAB(C)
      • S(h);N_SPINQ(b),SBLOCK::P(E)
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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).