MESON Chess Problem Database

Problem Display
PID: 243023 (6br/4Bp2/K2P1N2/2Q5/R1nr1kN1/2R2p1B/3n3P/8 w - - 0 1)

Akerblom, Johan Axel

Tijdschrift vd KNSB, 1928

6br/4Bp2/K2P1N2/2Q5/R1nr1kN1/2R2p1B/3n3P/8

#2

10 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Qe5#
    • 1...Rxd6+
      • 2.Bxd6#
    • 1...Sb2
      • 2.Qe5#
    • 1...Sa3
      • 2.Qe5#
    • 1...Se3
      • 2.Qe5#
    • 1...Sa5
      • 2.Qe5#
    • 1...Se5
      • 2.Qxe5#
    • 1...Sb6
      • 2.Qe5#
    • 1...Sxd6
      • 2.Bxd6#
      • 2.Qe5#
  • Tries
    • 1.Sh5+?
      • 1...Ke4
        • 2.Sf2#
        • 2.Sgf6#
      • 1...Rxh5!
  • Keys
    • 1.Sf2!
      • threat
        • 2.Qf5#
      • 1...Rxd6+
        • 2.Bxd6#
      • 1...Rxh3
        • 2.Sxh3#
      • 1...Sxd6
        • 2.Bxd6#
      • 1...Rd5
        • 2.Qe3#
      • 1...Se5
        • 2.Sd5#
      • 1...Rd3
        • 2.Sxd3#
      • 1...Rh5
        • 2.Sxh5#
      • 1...Bh7
        • 2.Sh5#
      • 1...Se3
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • R(d);P_SPINS(c)::QAB1(F)
    • R(d);CHECK,OGATE,P_SPINS(c),XP(H)::B(J),XR(d)
    • S(c);N_GUARD,P_SPINR(d)::QAB1(F)
    • S(c);N_GUARD,P_SPINR(d)::QAB1(F),XS(c)
  • Tries
    • Try
      • S(I);CHECK
      • Refutation
        • R(h);XS(I)
  • Actual
    • S(E);
    • Threat
      • QAR1(F)
    • Vars
      • R(d);CHECK,OGATE,P_SPINS(c),XP(H)::B(J),XR(d)
      • R(h);XB(C)::S(E),XR(h)
      • S(c);OGATE,P_SPINR(d),XP(H)::B(J),XS(c)
      • R(d);OGATE,P_SPINS(c)::QAB1(F)
      • S(c);P_SPINR(d),SBLOCK::S(I)
      • R(d);N_GUARD,P_SPINS(c)::S(E),XR(d)
      • R(h);N_GUARD::S(I),XR(h)
      • B(g);S_CUTR(h)::S(I)
      • S(c);P_SPINR(d),SBLOCK::S(E)
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