MESON Chess Problem Database

Problem Display
PID: 11898 (8/pK1pp3/8/3kpQ2/1PN2Pn1/1Np5/3pB3/r2R3q w - - 0 1)

Goldschmeding, Cornelis

2nd HM., KeyStip 08. Ty., 1973

8/pK1pp3/8/3kpQ2/1PN2Pn1/1Np5/3pB3/r2R3q

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Qxd7#
    • 1...Sf2
      • 2.Qxe5#
    • 1...Sh2
      • 2.Qxe5#
    • 1...Se3
      • 2.Qxe5#
    • 1...Sf6
      • 2.Qxe5#
    • 1...Sh6
      • 2.Qxe5#
    • 1...c2
      • 2.Rxd2#
    • 1...e6
      • 2.Qd3#
  • Tries
    • 1.Sbxd2?
      • threat
        • 2.Qxd7#
      • 1...Kd4+
        • 2.Sf3#
      • 1...cxd2
        • 2.Rxd2#
      • 1...Qh6
        • 2.Sb1#
      • 1...Ra6
        • 2.Sf1#
      • 1...Sf6
        • 2.Qxe5#
      • 1...e6
        • 2.Qd3#
      • 1...d6!
    • 1.Sc5?
      • threat
        • 2.Qd3#
        • 2.Qxd7#
      • 1...Qf3
        • 2.Qxd7#
      • 1...Qe4
        • 2.Qxe4#
        • 2.Qxd7#
      • 1...Qg1
        • 2.Qe4#
        • 2.Qxd7#
      • 1...Qh3
        • 2.Qe4#
        • 2.Qxd7#
      • 1...Qh6
        • 2.Qd3#
        • 2.Qe4#
      • 1...Qh7
        • 2.Qxd7#
      • 1...Ra6
        • 2.Qd3#
      • 1...Sf2
        • 2.Qxd7#
        • 2.Qxe5#
      • 1...Sf6
        • 2.Qd3#
        • 2.Qxe5#
      • 1...d6
        • 2.Qd3#
      • 1...e6
        • 2.Qd3#
      • 1...Kd4+!
    • 1.Se3+?
      • 1...Sxe3
        • 2.Qxe5#
      • 1...Kd6+!
  • Keys
    • 1.Scxd2!
      • threat
        • 2.Qxd7#
      • 1...Kd6+
        • 2.Se4#
      • 1...cxd2
        • 2.Rxd2#
      • 1...Qh6
        • 2.Sb1#
      • 1...Ra6
        • 2.Sf1#
      • 1...Sf6
        • 2.Qxe5#
      • 1...d6
        • 2.Bc4#
      • 1...e6
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 6
  • Sets
    • Q(b);SBLOCK::QAR2(G),XP(i)
    • S(e);N_GUARD::QAR1(G),XP(g)
    • P(d);N_GUARD::R(A),XP(c)
    • P(j);SBLOCK::QAR2(G)
  • Tries
    • Try
      • S(C);P_PINP(g),XP(c)
      • Threat
        • QAR2(G),XP(i)
      • Vars
        • K(f);CHECK,N_SPINP(g),P-FLIGHT::R(A)+S(C),DCHECK
        • P(d);N_SPINP(g),OGATE,P_SPINP(d),XS(C)::R(A),XP(d)
        • Q(b);N_GUARD::R(A)+S(C)
        • R(a);N_GUARD::R(A)+S(C)
        • S(e);N_GUARD::QAR1(G),XP(g)
        • P(j);SBLOCK::QAR2(G)
      • Refutation
        • P(i);
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);::QAR2(G),XP(i)
        • R(a);::QAR2(G)
        • P(i);::QAR2(G)
        • P(j);::QAR2(G)
      • Refutation
        • K(f);CHECK,P-FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • S(e);XS(E)::QAR1(G),XP(g)
      • Refutation
        • K(f);CHECK,P-FLIGHT
  • Actual
    • S(E);P_PINP(g),XP(c)
    • Threat
      • QAR2(G),XP(i)
    • Vars
      • K(f);CHECK,N_SPINP(g),P-FLIGHT::R(A)+S(E),DCHECK
      • P(d);N_SPINP(g),OGATE,P_SPINP(d),XS(E)::R(A),XP(d)
      • Q(b);N_GUARD::R(A)+S(E)
      • R(a);N_GUARD::R(A)+S(E)
      • S(e);N_GUARD::QAR1(G),XP(g)
      • P(i);SBLOCK::B(B)
      • P(j);SBLOCK::QAR2(G)
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