MESON Chess Problem Database

Problem Display
PID: 120109 (8/8/7B/6N1/7k/4Q2n/4Bn2/5K2 w - - 0 1)

Mach, Julius Zdenek

Tyden rozhlasu, 1940

8/8/7B/6N1/7k/4Q2n/4Bn2/5K2

#2

5 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Qxh3#
    • 1...Sh1
      • 2.Qxh3#
    • 1...Sd3
      • 2.Qxh3#
    • 1...Se4
      • 2.Qxh3#
    • 1...Sg4
      • 2.Qxh3#
    • 1...Sg1
      • 2.Qxf2#
    • 1...Sf4
      • 2.Qxf2#
    • 1...Sxg5
      • 2.Bxg5#
  • Tries
    • 1.Ke1?
      • 1...Sxg5
        • 2.Bxg5#
      • 1...Sg4
        • 2.Qxh3#
      • 1...Sd1
        • 2.Qxh3#
      • 1...Sh1
        • 2.Qxh3#
      • 1...Se4
        • 2.Qxh3#
      • 1...Sg1
        • 2.Qxf2#
      • 1...Sf4
        • 2.Qxf2#
      • 1...Sd3+!
    • 1.Kg2?
      • threat
        • 2.Qg3#
      • 1...Sg4
        • 2.Qxh3#
      • 1...Sh1
        • 2.Qxh3#
      • 1...Se4
        • 2.Qxh3#
      • 1...Sf4+!
    • 1.Qf4+?
      • 1...Sg4
        • 2.Qxg4#
      • 1...Sxf4!
    • 1.Qf3?
      • 1...Sg4
        • 2.Qxg4#
        • 2.Qxh3#
      • 1...Sd1
        • 2.Qg4#
        • 2.Qxh3#
      • 1...Sh1
        • 2.Qg4#
        • 2.Qxh3#
      • 1...Sd3
        • 2.Qg4#
        • 2.Qxh3#
      • 1...Se4
        • 2.Qg4#
        • 2.Qxh3#
      • 1...Sg1
        • 2.Qxf2#
      • 1...Sf4
        • 2.Qxf2#
      • 1...Sxg5!
  • Keys
    • 1.Bd1!
      • 1...Sxd1
        • 2.Qxh3#
      • 1...Sxg5
        • 2.Bxg5#
      • 1...Sg4
        • 2.Qxh3#
      • 1...Sh1
        • 2.Qxh3#
      • 1...Sd3
        • 2.Qxh3#
      • 1...Se4
        • 2.Qxh3#
      • 1...Sg1
        • 2.Qxf2#
      • 1...Sf4
        • 2.Qxf2#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAR1(C),XS(b)
    • S(b);N_GUARD::QAB(C),XS(a)
    • S(b);OGATE,XS(D)::B(E),XS(b)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • S(b);OGATE,XS(D)::B(E),XS(b)
        • S(a);N_GUARD::QAR1(C),XS(b)
        • S(b);N_GUARD::QAB(C),XS(a)
      • Refutation
        • S(a);CHECK
    • Try
      • K(A);S_FLIGHT
      • Threat
        • QAB1(C)
      • Vars
        • S(a);N_GUARD::QAR1(C),XS(b)
      • Refutation
        • S(b);CHECK
    • Try
      • Q(C);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAR1(C),XS(a)
      • Refutation
        • S(b);XQ(C)
    • Try
      • Q(C);
      • Vars
        • S(b);N_GUARD::QAB(C),XS(a)
      • Refutation
        • S(b);XS(D)
  • Actual
    • B(B);
    • Vars
      • S(a);N_GUARD,XB(B)::QAR1(C),XS(b)
      • S(b);OGATE,XS(D)::B(E),XS(b)
      • S(a);N_GUARD::QAR1(C),XS(b)
      • S(b);N_GUARD::QAB(C),XS(a)
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