MESON Chess Problem Database

Problem Display
PID: 23685 (8/b3k1pN/6B1/2pR1P2/3nK2p/2Q5/8/8 w - - 0 1)

Blunar, Stefan

Valuska, Jan

1st Prize, Zvolen Kezmarok, 1981

8/b3k1pN/6B1/2pR1P2/3nK2p/2Q5/8/8

#2

6 + 6

6424 Czech Album (1979-1981) 1986
3752 FIDE Album (1980-1982) 1988

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Qe5#
      • 2.Qxg7#
    • 1...Se2
      • 2.Qe5#
      • 2.Qxg7#
    • 1...Sb3
      • 2.Qe5#
      • 2.Qxg7#
    • 1...Sf3
      • 2.Qxg7#
    • 1...Sb5
      • 2.Qe5#
      • 2.Qxg7#
    • 1...Sxf5
      • 2.Qe5#
    • 1...Sc6
      • 2.Qxg7#
  • Tries
    • 1.Qe1?
      • threat
        • 2.Qxh4#
      • 1...Sxf5
        • 2.Kxf5#
      • 1...Sf3
        • 2.Kxf3#
      • 1...h3
        • 2.Qh4#
      • 1...Se6!
    • 1.Qxd4?
      • threat
        • 2.Re5#
        • 2.Rd7#
        • 2.Qe5#
        • 2.Qxg7#
      • 1...Bb8
        • 2.Rd7#
        • 2.Qxg7#
      • 1...cxd4!
    • 1.Qe3?
      • threat
        • 2.Qg5#
      • 1...Sxf5
        • 2.Kxf5#
      • 1...Sf3
        • 2.Kxf3#
      • 1...Se6!
    • 1.Qg3?
      • threat
        • 2.Qxh4#
        • 2.Qd6#
        • 2.Qc7#
        • 2.Qg5#
      • 1...Sxf5
        • 2.Qe5#
      • 1...Bb6
        • 2.Qxh4#
        • 2.Qd6#
        • 2.Qg5#
      • 1...Bb8
        • 2.Qxh4#
        • 2.Qg5#
      • 1...Sf3
        • 2.Qd6#
        • 2.Qc7#
      • 1...Sb5
        • 2.Qxh4#
        • 2.Qe5#
        • 2.Qg5#
      • 1...Se6
        • 2.Qd6#
      • 1...h3
        • 2.Qh4#
        • 2.Qd6#
        • 2.Qc7#
        • 2.Qg5#
      • 1...hxg3!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Qg5#
      • 1...Sxf5
        • 2.Re5#
      • 1...Sf3
        • 2.Rd7#
      • 1...Se6
        • 2.Rd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • S(a);OGATE::QAR2(A),XP(f)
    • S(a);OGATE,XP(D)::QAR2(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB(A),XP(b)
      • Vars
        • S(a);XP(D)::QAR(A)+K(B),XS(a)
        • S(a);::QAR(A)+K(B),XS(a)
        • P(b);::QAB(A)
      • Refutation
        • S(a);
    • Try
      • Q(A);XS(a)
      • Threat
        • DUALS(4)
      • Refutation
        • P(c);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • S(a);XP(D)::QAR(A)+K(B),XS(a)
        • S(a);::QAR(A)+K(B),XS(a)
      • Refutation
        • S(a);
    • Try
      • Q(A);
      • Threat
        • DUALS(4)
      • Vars
        • S(a);N_GUARD,XP(D)::QAR2(A)
        • S(a);::QAB1(A)
      • Refutation
        • P(b);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • S(a);N_GUARD,XP(D)::R(C)
      • S(a);::R1(C)
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