MESON Chess Problem Database

Problem Display
PID: 142732 (1B2NRq1/2pprn2/5pp1/1Q6/1Rnb1kNP/6pK/b1B3P1/8 w - - 0 1)

Aune, Mikal

1st Prize, BCF 060. Ty., 1948-1949

1B2NRq1/2pprn2/5pp1/1Q6/1Rnb1kNP/6pK/b1B3P1/8

#2

10 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Qf1#
    • 1...Sa3
      • 2.Qf1#
    • 1...Sa5
      • 2.Qf1#
    • 1...Sce5
      • 2.Rxd4#
    • 1...Sb6
      • 2.Qf1#
    • 1...Scd6
      • 2.Qf1#
    • 1...Sfe5
      • 2.Rxf6#
    • 1...Sg5+
      • 2.Qxg5#
    • 1...Sfd6
      • 2.Qg5#
    • 1...Sh6
      • 2.Qg5#
    • 1...Sd8
      • 2.Qg5#
    • 1...Sh8
      • 2.Qg5#
    • 1...g5
      • 2.Qf5#
  • Keys
    • 1.Sxc7!
      • threat
        • 2.Sd5#
        • 2.Se6#
      • 1...Sg5+
        • 2.Qxg5#
      • 1...Re4
        • 2.Se6#
      • 1...Re5
        • 2.Sd5#
      • 1...Re6
        • 2.Sd5#
        • 2.Sxe6#
      • 1...Be5
        • 2.Sd5#
      • 1...Sce5
        • 2.Rxd4#
      • 1...Scd6
        • 2.Qf1#
      • 1...Sfe5
        • 2.Rxf6#
      • 1...Sfd6
        • 2.Qg5#
      • 1...d5
        • 2.Sxd5#
        • 2.Se6#
      • 1...d6
        • 2.Sd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 8
  • Sets
    • S(c);OGATE,P_SPINB(d)::QAR(G)
    • S(c);N_SPINP(h),OGATE,P_SPINB(d)::R(D),XB(d)
    • S(c);N_SPINP(h),OGATE,P_SPINB(d)::QAR(G)
    • S(k);N_SPINP(h),OGATE,P_SPINP(f)::R(J),XP(f)
    • S(k);CHECK,N_GUARD,N_SPINP(h),P_SPINP(f)::QAB1(G),XS(k)
    • S(k);N_GUARD,N_SPINP(h),P_SPINP(f)::QAB1(G)
    • P(g);N_GUARD::QAR1(G)
  • Actual
    • S(I);XP(h)
    • Threat
      • DUALS(2)
    • Vars
      • S(k);CHECK,N_GUARD,P_SPINP(f)::QAB1(G),XS(k)
      • R(j);::B(H)+S(I),DCHECK
      • R(j);::S(I)
      • B(d);P_SPINS(c)::S(I)
      • S(c);OGATE,P_SPINB(d)::R(D),XB(d)
      • S(c);OGATE,P_SPINB(d)::QAR(G)
      • S(k);OGATE,P_SPINP(f)::R(J),XP(f)
      • S(k);N_GUARD,P_SPINP(f)::QAB1(G)
      • P(i);::S(I)
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