MESON Chess Problem Database

Problem Display
PID: 243453 (8/8/7p/4pK1P/4P2B/5kN1/3Pp1p1/4Q1n1 w - - 0 1)

Buchwald, Julius

Skakbladet, 1931

8/8/7p/4pK1P/4P2B/5kN1/3Pp1p1/4Q1n1

#2

7 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sh3
      • 2.Qxe2#
  • Tries
    • 1.Kxe5?
      • 1...Sh3
        • 2.Qxe2#
      • 1...Kg4!
    • 1.Sh1?
      • threat
        • 2.Qf2#
        • 2.Qg3#
      • 1...Sh3
        • 2.Qg3#
      • 1...gxh1S!
    • 1.Sxe2?
      • threat
        • 2.Sxg1#
        • 2.Qf2#
      • 1...Sxe2
        • 2.Qf2#
      • 1...Sh3!
    • 1.d3?
      • 1...Sh3
        • 2.Qxe2#
      • 1...Ke3!
  • Keys
    • 1.Sf1!
      • threat
        • 2.Sh2#
        • 2.Qf2#
        • 2.Qg3#
      • 1...exf1Q
        • 2.Qe3#
      • 1...exf1S
        • 2.Qf2#
      • 1...exf1B
        • 2.Qf2#
        • 2.Qe3#
      • 1...exf1R
        • 2.Qe3#
      • 1...gxf1Q
        • 2.Qg3#
      • 1...gxf1S
        • 2.Qf2#
      • 1...gxf1B
        • 2.Qf2#
        • 2.Qg3#
      • 1...gxf1R
        • 2.Qg3#
      • 1...Sh3
        • 2.Sh2#
        • 2.Qg3#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • S(a);N_GUARD::QAB1(A),XP(b)
  • Tries
    • Try
      • K(F);P-FLIGHT,XP(e)
      • Vars
        • S(a);N_GUARD::QAB1(A),XP(b)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::QAR1(A)
      • Refutation
        • P(c);XS(C)
    • Try
      • S(C);XP(b)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);XS(C)::QAR1(A)
      • Refutation
        • S(a);
    • Try
      • P(B);
      • Vars
        • S(a);N_GUARD::QAB1(A),XP(b)
      • Refutation
        • K(d);P-FLIGHT,P_SPINP(b)
  • Actual
    • S(C);
    • Threat
      • DUALS(3)
    • Vars
      • P(b);OGATE,XS(C)::QAR1(A)
      • P(b);XS(C)::QAR1(A)
      • P(c);XS(C)::QAR1(A)
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Developed and maintained by Brian Stephenson.
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