MESON Chess Problem Database

Problem Display
PID: 193819 (2B5/2b5/5P1R/4pNk1/r1r3N1/4P3/5PQK/8 w - - 0 1)

Goethart, Gerhardus Hendrik

Algemeen Handelsblad, 1916

2B5/2b5/5P1R/4pNk1/r1r3N1/4P3/5PQK/8

#2

9 + 5

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...e4+
      • 2.Se5#
  • Tries
    • 1.Qh3?
      • threat
        • 2.Qh4#
        • 2.Qh5#
      • 1...Rxg4
        • 2.Qh5#
      • 1...e4+!
    • 1.Qg3?
      • threat
        • 2.Qh4#
      • 1...e4
        • 2.Se5#
      • 1...Rxg4!
    • 1.f4+?
      • 1...exf4
        • 2.Sf2#
        • 2.Se5#
      • 1...Rxf4!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Qg8#
      • 1...e4+
        • 2.Sd6#
      • 1...Kxg4
        • 2.Qg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(c);CHECK,S_CUTR(b)::QAR(B)+S(E)
  • Tries
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);XS(E)::QAR1(B)
      • Refutation
        • P(c);CHECK
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • P(c);P_PINQ(B),S_CUTR(b)::QAR(B)+S(E)
      • Refutation
        • R(b);P_SPINR(b),XS(E)
    • Try
      • P(A);CHECK
      • Refutation
        • R(b);XP(A)
  • Actual
    • Q(B);
    • Threat
      • QAR(B)
    • Vars
      • P(c);CHECK::QAR(B)+S(F)
      • K(d);OGATEB,P-FLIGHT,XS(E)::QAR2(B)
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