MESON Chess Problem Database

Problem Display
PID: 194451 (8/1q6/6B1/4Q3/1r2P1r1/1P1kN1p1/4R3/4K3 w - - 0 1)

Helweg, Steffen ('Cyrano')

Berlinske Tidende, 1937

8/1q6/6B1/4Q3/1r2P1r1/1P1kN1p1/4R3/4K3

#2

7 + 5

SOLUTION

  • SOUND
  • Tries
    • 1.Sd1?
      • threat
        • 2.Sb2#
        • 2.Rd2#
        • 2.Qc3#
      • 1...Qxe4
        • 2.Sb2#
        • 2.Qc3#
      • 1...Rbxe4
        • 2.Sb2#
        • 2.Qc3#
      • 1...Rgxe4
        • 2.Sb2#
        • 2.Qc3#
      • 1...Qc6
        • 2.Sb2#
        • 2.Rd2#
      • 1...Qc8
        • 2.Sb2#
        • 2.Rd2#
      • 1...Qc7
        • 2.Sb2#
        • 2.Rd2#
      • 1...Qg7
        • 2.Sb2#
        • 2.Rd2#
      • 1...Rc4
        • 2.Sb2#
        • 2.Rd2#
      • 1...Rd4
        • 2.Rd2#
      • 1...Rxb3!
    • 1.Qc5?
      • threat
        • 2.Rd2#
      • 1...Rc4
        • 2.Qxc4#
      • 1...Rd4
        • 2.Qc2#
      • 1...Rxg6!
  • Keys
    • 1.Sc2!
      • threat
        • 2.Rd2#
      • 1...Qxe4
        • 2.Sxb4#
      • 1...Rxb3
        • 2.Qd4#
      • 1...Rbxe4
        • 2.Qd4#
      • 1...Rgxe4
        • 2.Qxg3#
      • 1...Rd4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(3)
      • Vars
        • R(c);::R1(B)
      • Refutation
        • R(c);XP(C)
    • Try
      • Q(F);
      • Threat
        • R1(B)
      • Vars
        • R(c);N_GUARD::QAB1(F),XR(c)
        • R(c);SBLOCK::QAB1(F)
      • Refutation
        • R(d);XB(G)
  • Actual
    • S(D);
    • Threat
      • R1(B)
    • Vars
      • Q(e);N_GUARD,P_PINR(B),P_SPINQ(e),XP(E)::S(D),XR(c)
      • R(c);N_GUARD,XP(C)::QAR1(F)
      • R(c);N_GUARD,P_PINR(B),P_SPINR(c),XP(E)::QAR1(F)
      • R(d);N_GUARD,P_PINR(B),P_SPINR(d),XP(E)::QAR(F),XP(b)
      • R(c);N_GUARD::QAR1(F),XR(c)
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Developed and maintained by Brian Stephenson.
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