MESON Chess Problem Database

Problem Display
PID: 110292 (4K3/8/2p1k1p1/3ppp2/2NR1RN1/4P3/4Q3/8 w - - 0 1)

Loepert, Fritz

Mate, 1982

4K3/8/2p1k1p1/3ppp2/2NR1RN1/4P3/4Q3/8

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...dxc4
      • 2.Qxc4#
    • 1...exd4
      • 2.exd4#
    • 1...exf4
      • 2.exf4#
    • 1...fxg4
      • 2.Qxg4#
  • Keys
    • 1.e4!
      • 1...dxc4
        • 2.Qxc4#
      • 1...dxe4
        • 2.Rd6#
      • 1...exd4
        • 2.exf5#
      • 1...exf4
        • 2.exd5#
      • 1...fxe4
        • 2.Rf6#
      • 1...fxg4
        • 2.Qxg4#
      • 1...c5
        • 2.exd5#
      • 1...g5
        • 2.exf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATE,XS(C)::QAB(A),XP(a)
    • P(b);OGATE,XR(D)::QAR(A)+P(B),XP(b)
    • P(b);OGATE,XR(E)::QAR(A)+P(B),XP(b)
    • P(c);OGATE,XS(F)::QAB(A),XP(c)
  • Actual
    • P(B);
    • Vars
      • P(a);OGATE,XS(C)::QAB(A),XP(a)
      • P(a);OGATE,XP(B)::R1(D)
      • P(b);XR(D)::QAR(A)+P(B)DCHECK,XP(c)
      • P(b);XR(E)::QAR(A)+P(B)DCHECK,XP(a)
      • P(c);OGATE,XP(B)::R1(E)
      • P(c);OGATE,XS(F)::QAB(A),XP(c)
      • P(d);N_GUARD::P(B),XP(a)
      • P(f);N_GUARD::P(B),XP(c)
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