MESON Chess Problem Database

Problem Display
PID: 7024 (3R4/B1Q1K1p1/p7/1pPB1p2/q1PkP1bR/b2p1r2/3P4/4r3 w - - 0 1)

Eriksson, Finn Olof

Prize, Schackvarlden, 1935

3R4/B1Q1K1p1/p7/1pPB1p2/q1PkP1bR/b2p1r2/3P4/4r3

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe4+
      • 2.Be6#
    • 1...Bc1
      • 2.c6#
    • 1...Bb2
      • 2.c6#
    • 1...Bxc5+
      • 2.Bxc5#
    • 1...Bh3
      • 2.Be6#
      • 2.Bf7#
      • 2.Bg8#
    • 1...Bh5
      • 2.Be6#
      • 2.Bf7#
      • 2.Bg8#
    • 1...bxc4
      • 2.Bc6#
    • 1...b4
      • 2.c6#
    • 1...fxe4
      • 2.Be6#
  • Tries
    • 1.Kf8?
      • threat
        • 2.Qxg7#
      • 1...Bxc5+
        • 2.Bxc5#
      • 1...Rxe4
        • 2.Be6#
        • 2.Bf7#
        • 2.Bg8#
      • 1...g5
        • 2.Qg7#
      • 1...g6
        • 2.Qg7#
      • 1...fxe4+!
  • Keys
    • 1.Ke8!
      • threat
        • 2.Qxg7#
      • 1...Rxe4+
        • 2.Be6#
      • 1...Bh5+
        • 2.Bf7#
      • 1...bxc4+
        • 2.Bc6#
      • 1...b4+
        • 2.c6#
      • 1...fxe4
        • 2.Be6#
      • 1...g5
        • 2.Qg7#
      • 1...g6
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(a);CHECK,P_PINP(E),SBLOCK,XP(C)::R(J)+B(F)
    • B(b);OGATE::B(G)+P(E)
    • B(b);CHECK,OGATE,P_SPINB(b),XP(E)::B(G),XB(b)
    • P(h);SBLOCK,XP(B)::R(J)+B(F)
    • P(h);OGATE::B(G)+P(E)
    • P(i);P_PINP(E),SBLOCK,XP(C)::R(J)+B(F)
  • Tries
    • Try
      • K(I);N_SPINP(C),P_SPINP(E),S_FLIGHT
      • Threat
        • QAB(H),XP(k)
      • Vars
        • B(b);CHECK,OGATE,P_SPINB(b),XP(E)::B(G),XB(b)
        • P(k);::QAB(H)
      • Refutation
        • P(i);CHECK,XP(C)
  • Actual
    • K(I);P-FLIGHT
    • Threat
      • QAB(H),XP(k)
    • Vars
      • R(a);CHECK,SBLOCK,XP(C)::R(J)+B(F)
      • B(g);CHECK::R(J)+B(F)
      • P(h);CHECK,SBLOCK,XP(B)::R(J)+B(F)
      • P(h);CHECK,S_CUTB(b)::B(G)+P(E)
      • P(i);SBLOCK,XP(C)::R(J)+B(F)
      • P(k);::QAB(H)
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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).