MESON Chess Problem Database

Problem Display
PID: 233758 (2k1K3/B1rpR3/2Q1Np2/N4B1p/b7/5q2/3R3b/2r5 w - - 0 1)

Popp, Willy

Freie Presse, 1977

2k1K3/B1rpR3/2Q1Np2/N4B1p/b7/5q2/3R3b/2r5

#2

8 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Qa8#
    • 1...Qe2
      • 2.Qa8#
    • 1...Qg4
      • 2.Qa8#
    • 1...Qf1
      • 2.Qa8#
    • 1...Qf2
      • 2.Qa8#
    • 1...Qa3
      • 2.Qa8#
    • 1...Qc3
      • 2.Qa8#
    • 1...Qd3
      • 2.Qa8#
    • 1...Qe3
      • 2.Qa8#
    • 1...Qg3
      • 2.Qa8#
    • 1...Qh3
      • 2.Qa8#
    • 1...Qf4
      • 2.Qa8#
    • 1...Qxf5
      • 2.Qa8#
    • 1...dxc6
      • 2.Rd8#
    • 1...dxe6
      • 2.Bxe6#
      • 2.Rd8#
    • 1...d5
      • 2.Sf4#
    • 1...d6
      • 2.Sf4#
      • 2.Rxc7#
  • Tries
    • 1.Kf8?
      • threat
        • 2.Re8#
      • 1...Qa3
        • 2.Qa8#
      • 1...Bd6!
  • Keys
    • 1.Kf7!
      • threat
        • 2.Re8#
      • 1...dxc6
        • 2.Rd8#
      • 1...dxe6
        • 2.Bxe6#
      • 1...d5
        • 2.Qa8#
      • 1...d6
        • 2.Rxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 13
  • Sets
    • Q(c);N_GUARD::QAR2(D)
    • Q(c);N_GUARD,XB(C)::QAR2(D)
    • P(h);N_SPINR(g),OGATE,XQ(D)::R1(A)
    • P(h);P_PINQ(D)::B(C)+S(E)
  • Tries
    • Try
      • K(H);P-FLIGHT
      • Threat
        • R(G)
      • Vars
        • Q(c);N_GUARD,P_PINR(G)::QAR2(D)
      • Refutation
        • B(b);P_PINR(G)
  • Actual
    • K(H);S_FLIGHT
    • Threat
      • R(G)
    • Vars
      • P(h);N_SPINR(g),OGATE,P_PINR(G),XQ(D)::R1(A)
      • P(h);OGATE,P_PINR(G),P_SPINP(h),XS(E)::B(C),XP(h)
      • P(h);P_PINR(G),S_CUTQ(c)::QAR2(D)
      • P(h);OGATE,P_PINR(G)::R1(G),XR(g)
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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).