MESON Chess Problem Database

Problem Display
PID: 146827 (1n3B2/r7/pNPR3b/Qbk1n3/3p3q/7p/4Rp2/5K2 w - - 0 1)

Akerblom, Johan Axel

Svenska Dagbladet, 1925

(First published on Sun Aug 16 1925)

1n3B2/r7/pNPR3b/Qbk1n3/3p3q/7p/4Rp2/5K2

#2

7 + 11

14868 Pirnie Collection 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.Rc2#
    • 1...Sc4
      • 2.Sa4#
    • 1...Sexc6
      • 2.Rd5#
    • 1...Sbxc6
      • 2.Rd5#
    • 1...d3
      • 2.Rxe5#
  • Tries
    • 1.Rf6+?
      • 1...Re7
        • 2.Bxe7#
      • 1...Bxf8!
  • Keys
    • 1.c7!
      • threat
        • 2.Qa3#
      • 1...Qg3
        • 2.Rxh6#
      • 1...Bc1
        • 2.Rf6#
      • 1...Bd2
        • 2.Rf6#
      • 1...Sd3
        • 2.Rc2#
      • 1...Sc4
        • 2.Sa4#
      • 1...Sec6
        • 2.Rd5#
      • 1...Sbc6
        • 2.Rd5#
      • 1...d3
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(g);N_PINR(B)::R(B)
    • S(g);N_PINR(B),SBLOCK::S(D)
    • S(g);SBLOCK,XP(E)::B(G)+R(F),DCHECK
    • S(k);SBLOCK,XP(E)::B(G)+R(F),DCHECK
    • P(c);N_PINR(B)::R(B),XS(g)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • R(j);N_GUARD,P_SPINR(j)::B(G),XR(j)
      • Refutation
        • B(i);XB(G)
  • Actual
    • P(E);
    • Threat
      • QAB(C)
    • Vars
      • Q(d);N_GUARD::B(G)+R(F),XB(i)
      • B(i);N_GUARD::B(G)+R(F)
      • S(g);N_PINR(B)::R(B)
      • S(g);N_PINR(B),SBLOCK::S(D)
      • S(g);SBLOCK::B(G)+R(F),DCHECK
      • S(k);SBLOCK::B(G)+R(F),DCHECK
      • P(c);N_PINR(B)::R(B),XS(g)
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