MESON Chess Problem Database

Problem Display
PID: 141730 (1n2R3/b1R2K2/3N1pp1/2Pk4/2p2P1p/NpP5/r3pB2/1Q2n2q w - - 0 1)

Smits, A

1st HM., 08. Kwik-Toernooi, 1977

1n2R3/b1R2K2/3N1pp1/2Pk4/2p2P1p/NpP5/r3pB2/1Q2n2q

#2

10 + 12

102 Probleemblad 1977

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Qxe4#
    • 1...Qf1
      • 2.Qe4#
    • 1...Qg1
      • 2.Qe4#
    • 1...Qh2
      • 2.Qe4#
    • 1...Qh3
      • 2.Qe4#
    • 1...Sc2
      • 2.Qxh1#
    • 1...Sg2
      • 2.Qe4#
    • 1...Sd3
      • 2.Qxh1#
    • 1...Sf3
      • 2.Qe4#
    • 1...f5
      • 2.Re5#
    • 1...g5
      • 2.Qf5#
  • Tries
    • 1.Sdxc4?
      • threat
        • 2.Se3#
      • 1...Bxc5
        • 2.Rxc5#
      • 1...Qe4
        • 2.Qxe4#
      • 1...Qh3
        • 2.Qe4#
      • 1...Sc2
        • 2.Qxh1#
      • 1...Sg2
        • 2.Qd3#
        • 2.Qe4#
      • 1...Sc6
        • 2.Rd7#
      • 1...Qf3!
    • 1.Se4?
      • threat
        • 2.Sxf6#
      • 1...Qxe4
        • 2.Qxe4#
      • 1...Bxc5
        • 2.Rxc5#
      • 1...f5
        • 2.Sf6#
        • 2.Re5#
      • 1...Sd7!
    • 1.Sc8?
      • threat
        • 2.Se7#
      • 1...Bxc5
        • 2.Rxc5#
      • 1...Qe4
        • 2.Qxe4#
      • 1...Sc2
        • 2.Qxh1#
      • 1...Sd3
        • 2.Qxh1#
      • 1...Sc6
        • 2.Rd7#
      • 1...Rc2!
    • 1.Qd3+?
      • 1...cxd3
        • 2.c4#
      • 1...Sxd3!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Se3#
        • 2.Se7#
      • 1...Bxc5
        • 2.Rxc5#
      • 1...gxf5
        • 2.Qxf5#
      • 1...Qf3
        • 2.Se7#
      • 1...Qe4
        • 2.Qxe4#
      • 1...Qh3
        • 2.Se7#
        • 2.Qe4#
      • 1...Rc2
        • 2.Se3#
      • 1...Sc2
        • 2.Qxh1#
      • 1...Sg2
        • 2.Se7#
        • 2.Qe4#
      • 1...Sd3
        • 2.Se3#
        • 2.Qxh1#
      • 1...Sc6
        • 2.Rd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 9
  • Sets
    • Q(b);N_GUARD::QAB1(A),XQ(b)
    • Q(b);N_GUARD::QAB1(A)
    • S(a);OGATE::QAB(A),XQ(b)
    • S(a);S_CUTQ(b)::QAB1(A)
    • P(i);N_GUARD::R1(J)
    • P(j);N_GUARD::QAR2(A)
  • Tries
    • Try
      • S(G);XP(f)
      • Threat
        • S(G)
      • Vars
        • B(k);OGATE,XP(F)::R1(H),XB(k)
        • Q(b);N_GUARD::QAB1(A),XQ(b)
        • Q(b);N_GUARD::QAB1(A)
        • S(a);OGATE::QAB(A),XQ(b)
        • S(l);N_GUARD,SBLOCK::R(H)
      • Refutation
        • Q(b);
    • Try
      • S(G);
      • Threat
        • S(G),XP(i)
      • Vars
        • Q(b);OGATE,XS(G)::QAB1(A),XQ(b)
        • B(k);OGATE,XP(F)::R1(H),XB(k)
      • Refutation
        • S(l);
    • Try
      • S(G);
      • Threat
        • S(G)
      • Vars
        • B(k);OGATE,XP(F)::R1(H),XB(k)
        • Q(b);N_GUARD::QAB1(A),XQ(b)
        • S(a);OGATE::QAB(A),XQ(b)
        • S(l);N_GUARD,SBLOCK::R(H)
      • Refutation
        • R(c);
    • Try
      • Q(A);CHECK
      • Vars
        • P(f);OGATE,XQ(A)::P(D)
      • Refutation
        • S(a);XQ(A)
  • Actual
    • S(G);
    • Threat
      • DUALS(2)
    • Vars
      • B(k);OGATE,XP(F)::R1(H),XB(k)
      • P(j);OGATE,XS(G)::QAR2(A),XP(j)
      • Q(b);::S(G)
      • Q(b);N_GUARD::QAB1(A),XQ(b)
      • R(c);::S(G)
      • S(a);OGATE::QAB(A),XQ(b)
      • S(l);N_GUARD,SBLOCK::R(H)
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