MESON Chess Problem Database

Problem Display
PID: 24753 (1B5r/6Q1/p6p/1p5p/4P2n/rn2kP2/1N3R2/3Bb2K w - - 0 1)

Nielsen, Kristian

HM., Nordisk Schackforbund, 1911

1B5r/6Q1/p6p/1p5p/4P2n/rn2kP2/1N3R2/3Bb2K

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf2
      • 2.Qg1#
    • 1...Bxf2
      • 2.Qc3#
    • 1...Sa1
      • 2.Qa7#
    • 1...Sc1
      • 2.Qa7#
    • 1...Sd2
      • 2.Qa7#
    • 1...Sa5
      • 2.Qa7#
    • 1...Sxf3
      • 2.Re2#
  • Tries
    • 1.Bf4+?
      • 1...Kxf2
        • 2.Qg1#
      • 1...Kxf4!
    • 1.Qa7+?
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sd4!
  • Keys
    • 1.Rd2!
      • threat
        • 2.Qc3#
      • 1...Kxd2
        • 2.Bf4#
      • 1...Rxb8
        • 2.Qxh6#
      • 1...Bxd2
        • 2.Qg1#
      • 1...Sxd2
        • 2.Qa7#
      • 1...Sxf3
        • 2.Re2#
      • 1...Rc8
        • 2.Qxh6#
      • 1...Rd8
        • 2.Qxh6#
      • 1...Sa1
        • 2.Qd4#
      • 1...Sc1
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sa5
        • 2.Qd4#
      • 1...Sc5
        • 2.Qd4#
      • 1...b4
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 8
    • REMOVED MATES = 2
  • Sets
    • K(d);OGATEB,S_FLIGHT,XR(D)::QAB1(G)
    • B(a);N_GUARD,SBLOCK,XR(D)::QAR2(G)
    • S(c);N_GUARD::QAB(G)
    • S(e);SBLOCK,XP(E)::R1(D)
  • Tries
    • Try
      • B(H);CHECK
      • Vars
        • K(d);S_FLIGHT,XR(D)::QAB1(G)
      • Refutation
        • K(d);S_FLIGHT,XB(H)
    • Try
      • Q(G);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAB(G),XS(c)
      • Refutation
        • S(c);P_SPINS(c)
  • Actual
    • R(D);
    • Threat
      • QAR2(G)
    • Vars
      • K(d);S_FLIGHT,XR(D)::B(H)
      • R(j);N_GUARD,XB(H)::QAB(G),XP(i)
      • B(a);N_GUARD,SBLOCK,XR(D)::QAB(G)
      • S(c);N_GUARD,SBLOCK,XR(D)::QAB(G)
      • S(e);SBLOCK,XP(E)::R1(D)
      • R(j);N_GUARD::QAB(G),XP(i)
      • S(c);N_GUARD::QAB1(G)
      • S(c);N_GUARD::QAB1(G),XS(c)
      • P(f);N_GUARD::S(C)
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