MESON Chess Problem Database

Problem Display
PID: 169846 (n4Q2/6p1/4Bn1B/K1N2Nr1/1R2pk2/4R1p1/5br1/8 w - - 0 1)

Hassberg, Eric Manfred

To Alain White, 1945

n4Q2/6p1/4Bn1B/K1N2Nr1/1R2pk2/4R1p1/5br1/8

#2

8 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qd6#
    • 1...Sg4
      • 2.Sd3#
      • 2.Rbxe4#
    • 1...Sd5
      • 2.Rbxe4#
    • 1...Sh5
      • 2.Rbxe4#
    • 1...Sd7
      • 2.Rbxe4#
    • 1...Sh7
      • 2.Rbxe4#
    • 1...Se8
      • 2.Rbxe4#
    • 1...Sg8
      • 2.Rbxe4#
  • Tries
    • 1.Rexe4+?
      • 1...Kf3
        • 2.Sh4#
      • 1...Sxe4!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Rxe4#
      • 1...Kxe3
        • 2.Bxg5#
      • 1...Ke5
        • 2.Sd3#
      • 1...Bxe3
        • 2.Qd6#

This is a version of 17049

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • K(e);N_SPINR(f),S_FLIGHT::QAB1(H)
    • S(g);N_GUARD::R1(B),XP(d)
  • Tries
    • Try
      • R(A);CHECK,XP(d)
      • Vars
        • K(e);N_SPINR(f),P-FLIGHT::S(E)
      • Refutation
        • S(g);P_SPINS(g),XR(A)
  • Actual
    • S(E);N_PINP(d),P_PINS(g),P_SPINS(D)
    • Threat
      • R1(A),XP(d)
    • Vars
      • K(e);N_SPINS(g),S_FLIGHT,XR(A)::B(G),XR(f)
      • K(e);N_PINS(D),N_SPINR(f),N_SPINS(g),P_SPINP(d),S_FLIGHT::S(D)
      • B(a);SBLOCK,XR(A)::QAB(H)
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).