MESON Chess Problem Database

Problem Display
PID: 267192 (1n1Q1nb1/N3P3/3P4/2pkN3/1Pp1RP2/2p1K2B/8/8 w - - 0 1)

Haring, Jacobus

Schakend Nederland, 1979

1n1Q1nb1/N3P3/3P4/2pkN3/1Pp1RP2/2p1K2B/8/8

#2

10 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Sf7?
      • threat
        • 2.Re5#
      • 1...Sbd7
        • 2.Qa8#
      • 1...Sg6
        • 2.Be6#
      • 1...Sfd7
        • 2.Be6#
      • 1...Sc6!
    • 1.Sb5?
      • threat
        • 2.Sxc3#
        • 2.Sc7#
      • 1...Sa6
        • 2.Sxc3#
        • 2.Qa8#
      • 1...Sbd7
        • 2.Qa8#
      • 1...Se6
        • 2.Sxc3#
      • 1...Sfd7
        • 2.Qxg8#
      • 1...c2
        • 2.Sc3#
        • 2.Sc7#
      • 1...cxb4!
    • 1.Sc8?
      • threat
        • 2.Sb6#
      • 1...cxb4
        • 2.Qa5#
      • 1...Sfd7
        • 2.Qxg8#
      • 1...Sbd7!
    • 1.Qa5?
      • threat
        • 2.Rd4#
        • 2.Qxc5#
      • 1...Kxd6
        • 2.Qxc5#
      • 1...Sa6
        • 2.Rd4#
      • 1...Sc6
        • 2.Qxc5#
      • 1...Sbd7
        • 2.Rd4#
      • 1...Sfd7
        • 2.Rd4#
      • 1...Se6!
    • 1.exf8Q?
      • threat
        • 2.Qxg8#
      • 1...cxb4
        • 2.Qa5#
      • 1...Bf7
        • 2.Qxf7#
      • 1...Bh7
        • 2.Qf7#
      • 1...Sd7
        • 2.Qa8#
      • 1...Be6!
    • 1.e8S?
      • threat
        • 2.Sf6#
        • 2.Sc7#
      • 1...cxb4
        • 2.Qa5#
      • 1...Se6
        • 2.Sf6#
      • 1...Sa6
        • 2.Sf6#
        • 2.Qa8#
      • 1...Sbd7
        • 2.Qa8#
      • 1...Sh7
        • 2.Sc7#
      • 1...Sfd7!
  • Keys
    • 1.Sxc4!
      • threat
        • 2.Sb6#
      • 1...cxb4
        • 2.Qa5#
      • 1...Sbd7
        • 2.Qa8#
      • 1...Sfd7
        • 2.Qxg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);
      • Threat
        • R1(D)
      • Vars
        • S(e);OGATE::QAB(J)
        • S(f);N_GUARD::B(B)
      • Refutation
        • S(e);
    • Try
      • S(H);
      • Threat
        • DUALS(2)
      • Vars
        • S(e);OGATE::QAB(J)
        • S(f);::S(H),XP(a)
        • S(f);OGATE::QAB(J),XB(g)
      • Refutation
        • P(c);XP(C)
    • Try
      • S(H);
      • Threat
        • S(H)
      • Vars
        • P(c);OGATEB,XP(C)::QAR(J)
        • S(f);OGATE::QAB(J),XB(g)
      • Refutation
        • S(e);
    • Try
      • Q(J);P_PINP(c)
      • Threat
        • DUALS(2)
      • Vars
        • K(d);N_SPINP(c),P-FLIGHT,XP(G)::QAB1(J),XP(c)
        • S(e);::R1(D)
        • S(e);::QAR1(J),XP(c)
        • S(f);::R1(D)
      • Refutation
        • S(f);
    • Try
      • P(I);XS(f)
      • Threat
        • QAB(I),XB(g)
      • Vars
        • P(c);OGATEB,XP(C)::QAR(J)
        • B(g);N_GUARD::QAB(I),XB(g)
        • B(g);N_GUARD::QAB(I)
        • S(e);OGATE::QAB(J)
      • Refutation
        • B(g);
    • Try
      • P(I);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);OGATEB,XP(C)::QAR(J)
        • S(f);::S(I)
        • S(e);OGATE::QAB(J)
      • Refutation
        • S(f);
  • Actual
    • S(F);XP(b)
    • Threat
      • S(F)
    • Vars
      • P(c);OGATEB,XP(C)::QAR(J)
      • S(e);OGATE::QAB(J)
      • S(f);OGATE::QAB(J),XB(g)
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