MESON Chess Problem Database

Problem Display
PID: 36858 (4Q3/4K3/p3p3/2p5/n1k2N2/1Rp1P3/1nP5/r1r5 w - - 0 1)

Machler, Emil

3rd Prize, Wola Gulowska, 1994

4Q3/4K3/p3p3/2p5/n1k2N2/1Rp1P3/1nP5/r1r5

#2

6 + 9

15345 Wola Gulowska Award 1994
3454 kunstschach (1987-1996) (Hoffmann) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...a5
      • 2.Qb5#
    • 1...e5
      • 2.Qf7#
      • 2.Qg8#
  • Tries
    • 1.Qg6?
      • threat
        • 2.Qe4#
        • 2.Qxe6#
      • 1...Rxc2
        • 2.Qxe6#
      • 1...Sb6
        • 2.Qe4#
      • 1...e5
        • 2.Qe4#
        • 2.Qf7#
        • 2.Qxa6#
        • 2.Qe6#
        • 2.Qg8#
      • 1...Rd1!
    • 1.Qa8?
      • threat
        • 2.Qe4#
        • 2.Qxa6#
      • 1...Sb6
        • 2.Qe4#
      • 1...Rd1
        • 2.Qxa6#
      • 1...a5
        • 2.Qe4#
        • 2.Qa6#
      • 1...Rxc2!
    • 1.Qc8?
      • threat
        • 2.Qxa6#
        • 2.Qxe6#
      • 1...Rxc2
        • 2.Qxe6#
      • 1...Rd1
        • 2.Qxa6#
      • 1...a5
        • 2.Qa6#
        • 2.Qxe6#
      • 1...e5
        • 2.Qxa6#
        • 2.Qe6#
        • 2.Qg8#
      • 1...Sb6!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qe4#
        • 2.Qxa6#
        • 2.Qxe6#
      • 1...Rxc2
        • 2.Qxe6#
      • 1...Sb6
        • 2.Qe4#
      • 1...Rd1
        • 2.Qxa6#
      • 1...a5
        • 2.Qe4#
        • 2.Qb5#
        • 2.Qa6#
        • 2.Qxe6#
      • 1...e5
        • 2.Qe4#
        • 2.Qd5#
        • 2.Qxa6#
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(h);N_GUARD::QAB1(F)
  • Tries
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);XP(A)::QAB(F),XP(i)
        • S(e);::QAR2(F)
      • Refutation
        • R(b);
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • S(e);::QAR2(F)
        • R(b);::QAB(F),XP(h)
      • Refutation
        • R(b);XP(A)
    • Try
      • Q(F);P_PINP(g)
      • Threat
        • DUALS(2)
      • Vars
        • R(b);XP(A)::QAB(F),XP(i)
        • R(b);::QAB(F),XP(h)
      • Refutation
        • S(e);
  • Actual
    • Q(F);P_PINP(g)
    • Threat
      • DUALS(3)
    • Vars
      • R(b);XP(A)::QAB(F),XP(i)
      • S(e);::QAR2(F)
      • R(b);::QAB(F),XP(h)
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