MESON Chess Problem Database

Problem Display
PID: 73506 (Q7/4n3/1p1PK1p1/1p2ppP1/1P1k4/2pPp3/3PP3/8 w - - 0 1)

Holler, Werner

Freie Presse, 1993

Q7/4n3/1p1PK1p1/1p2ppP1/1P1k4/2pPp3/3PP3/8

#2

8 + 9

6113 Problemschach-Jahrbuch (1993) 1994

SOLUTION

  • SOUND
  • Sets
    • 1...Sd5
      • 2.Qxd5#
    • 1...Sc8
      • 2.Qd5#
    • 1...Sg8
      • 2.Qd5#
    • 1...cxd2
      • 2.Qa1#
    • 1...c2
      • 2.Qa1#
    • 1...e4
      • 2.Qh8#
    • 1...f4
      • 2.Qe4#
  • Tries
    • 1.Qf3?
      • threat
        • 2.Qxe3#
        • 2.dxe3#
      • 1...exd2
        • 2.Qf2#
      • 1...Sd5
        • 2.Qxd5#
      • 1...c2
        • 2.Qxe3#
      • 1...f4
        • 2.Qe4#
      • 1...cxd2!
    • 1.Qb7?
      • threat
        • 2.Qxb6#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sc8
        • 2.Qd5#
      • 1...cxd2!
    • 1.Qa1?
      • threat
        • 2.Qxc3#
        • 2.dxc3#
      • 1...exd2
        • 2.Qg1#
      • 1...Sd5!
    • 1.dxe7?
      • threat
        • 2.Qd5#
        • 2.Qd8#
      • 1...cxd2
        • 2.Qa1#
      • 1...exd2!
  • Keys
    • 1.Qh1!
      • 1...cxd2
        • 2.Qa1#
      • 1...exd2
        • 2.Qg1#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sc6
        • 2.Qd5#
      • 1...Sc8
        • 2.Qd5#
      • 1...Sg8
        • 2.Qd5#
      • 1...c2
        • 2.Qa1#
      • 1...e4
        • 2.Qh8#
      • 1...f4
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(i);N_GUARD::QAR1(H),XS(i)
    • S(i);N_GUARD::QAR1(H)
    • P(a);OGATEB,XP(A)::QAB(H)
    • P(a);OGATEB::QAB(H)
    • P(e);OGATEB::QAB(H)
    • P(f);N_GUARD::QAR1(H)
  • Tries
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);OGATEB,XP(A)::QAB(H)
        • S(i);N_GUARD::QAR1(H),XS(i)
        • P(a);::QAB1(H),XP(b)
        • P(f);N_GUARD::QAR1(H)
      • Refutation
        • P(a);XP(A)
    • Try
      • Q(H);
      • Threat
        • QAB(H),XP(g)
      • Vars
        • S(i);N_GUARD::QAR1(H),XS(i)
        • S(i);N_GUARD::QAR1(H)
      • Refutation
        • P(a);XP(A)
    • Try
      • Q(H);P_PINP(a)
      • Threat
        • DUALS(2)
      • Vars
        • P(b);OGATEB,XP(A)::QAB(H)
      • Refutation
        • S(i);
    • Try
      • P(F);XS(i)
      • Threat
        • DUALS(2)
      • Vars
        • P(a);OGATEB,XP(A)::QAB(H)
      • Refutation
        • P(b);XP(A)
  • Actual
    • Q(H);
    • Vars
      • P(a);OGATEB,XP(A)::QAB(H)
      • P(b);OGATEB,XP(A)::QAB(H)
      • S(i);N_GUARD::QAR1(H),XS(i)
      • S(i);N_GUARD::QAR1(H)
      • P(a);OGATEB::QAB(H)
      • P(e);OGATEB::QAB(H)
      • P(f);N_GUARD::QAR1(H)
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