MESON Chess Problem Database

Problem Display
PID: 102160 (8/8/8/Q1N5/P1k1B3/2P4K/q2b4/nr2n3 w - - 0 1)

Scheel, Johan

Svenska Dagbladet, 1918

8/8/8/Q1N5/P1k1B3/2P4K/q2b4/nr2n3

#2

6 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Qb4#
    • 1...Rd1
      • 2.Qb4#
    • 1...Rb4
      • 2.Qxb4#
    • 1...Sb3
      • 2.Qb4#
  • Keys
    • 1.Sb3!
      • threat
        • 2.Qb4#
      • 1...Kxb3
        • 2.Qb4#
      • 1...Qxb3
        • 2.Qc7#
      • 1...Qxa4
        • 2.Sxd2#
      • 1...Rxb3
        • 2.Qc7#
      • 1...Bxc3
        • 2.Qb5#
      • 1...Qa3
        • 2.Sxd2#
      • 1...Sac2
        • 2.Sxd2#
      • 1...Sec2
        • 2.Sxd2#
      • 1...Sd3
        • 2.Bd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 4
  • Sets
    • R(b);N_GUARD::QAR1(E)
    • R(b);N_GUARD::QAR1(E),XR(b)
    • S(a);S_CUTR(b)::QAR1(E)
  • Actual
    • S(F);
    • Threat
      • QAR1(E)
    • Vars
      • K(f);S_FLIGHT,XS(F)::QAR1(E)
      • Q(d);P_PINP(A),SBLOCK,XS(F)::QAR(E)
      • Q(d);N_GUARD,XP(C)::S(F),XB(e)
      • R(b);P_PINP(A),SBLOCK,XS(F)::QAR(E)
      • B(e);SBLOCK,XP(A)::QAB1(E)
      • Q(d);N_GUARD::S(F),XB(e)
      • S(a);S_CUTQ(d)::S(F),XB(e)
      • S(c);S_CUTQ(d)::S(F),XB(e)
      • S(c);SBLOCK::B(D)
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