MESON Chess Problem Database

Problem Display
PID: 200733 (Q4b1B/2p1n1P1/B2n4/RP3p2/3k1p2/1PN5/1P3P2/R3K3 w Q - 0 1)

Fiedler, Frank

Gaudium, 2001

Q4b1B/2p1n1P1/B2n4/RP3p2/3k1p2/1PN5/1P3P2/R3K3

#2

12 + 7

16210 Problemschach-Jahrbuch (2001) 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.0-0-0#
    • 1...Ke5
      • 2.gxf8S#
    • 1...Sd5
      • 2.Qxd5#
    • 1...Sg6
      • 2.Qd5#
    • 1...Sc8
      • 2.Qd5#
    • 1...Sg8
      • 2.Qd5#
  • Tries
    • 1.Rd1+?
      • 1...Ke5
        • 2.gxf8S#
      • 1...Kc5!
    • 1.R5a4+?
      • 1...Kd3
        • 2.0-0-0#
      • 1...Kc5
        • 2.Qa7#
      • 1...Ke5
        • 2.gxf8S#
      • 1...Sc4!
    • 1.gxf8Q+?
      • 1...Kd3
        • 2.0-0-0#
      • 1...Kc5!
    • 1.gxf8S+?
      • 1...Kd3
        • 2.0-0-0#
      • 1...Kc5!
    • 1.gxf8B+?
      • 1...Kd3
        • 2.0-0-0#
      • 1...Kc5!
    • 1.gxf8R+?
      • 1...Kd3
        • 2.0-0-0#
      • 1...Kc5!
    • 1.0-0-0+?
      • 1...Ke5
        • 2.gxf8S#
      • 1...Kc5!
  • Keys
    • 1.Qa7+!
      • 1...Kd3
        • 2.0-0-0#
      • 1...Ke5
        • 2.gxf8S#
      • 1...c5
        • 2.bxc5 ep#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • K(a);P-FLIGHT::0-0-0
    • K(a);S_FLIGHT::PXB(g)=S
    • S(f);N_GUARD::QAR1(K),XS(f)
    • S(f);N_GUARD::QAR1(K)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • K(a);S_FLIGHT::PXB(g)=S
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(G);CHECK
      • Vars
        • K(a);P-FLIGHT::0-0-0
        • K(a);S_FLIGHT::QAB(K)
        • K(a);S_FLIGHT::PXB(g)=S
      • Refutation
        • S(d);P_SPINS(d)
    • Try
      • P(J);CHECK,XB(g)
      • Vars
        • K(a);P-FLIGHT::0-0-0
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(J);CHECK,XB(g)
      • Vars
        • K(a);P-FLIGHT::0-0-0
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(J);CHECK,XB(g)
      • Vars
        • K(a);P-FLIGHT::0-0-0
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(J);CHECK,XB(g)
      • Vars
        • K(a);P-FLIGHT::0-0-0
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(B);0-0-0,CHECK
      • Vars
        • K(a);S_FLIGHT::PXB(g)=S
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(K);CHECK
    • Vars
      • K(a);P-FLIGHT::0-0-0
      • K(a);S_FLIGHT::PXB(g)=S
      • P(e);OGATE,P_SPINP(e)::QAB(K)+P(H),XP(e),EP
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