MESON Chess Problem Database

Problem Display
PID: 150191 (K5b1/B6p/7b/1pR4N/3kB3/3pR3/5n2/3n2Q1 w - - 0 1)

Delpy, Egbert

2nd Prize, Sachen Association, 1927

K5b1/B6p/7b/1pR4N/3kB3/3pR3/5n2/3n2Q1

#2

7 + 8

14868 Pirnie Collection 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Bb7?
      • threat
        • 2.Re4#
        • 2.Rc1#
        • 2.Rc2#
        • 2.Rc7#
        • 2.Rc8#
      • 1...Kxe3
        • 2.Rc2#
      • 1...Bxe3
        • 2.Qg7#
      • 1...Sxe3
        • 2.Qa1#
      • 1...Bf8
        • 2.Re4#
      • 1...Bd5
        • 2.Rc1#
        • 2.Rc2#
        • 2.Rc6#
        • 2.Rc7#
        • 2.Rc8#
      • 1...Sc3
        • 2.Rc7#
        • 2.Rc8#
      • 1...Se4
        • 2.Rxe4#
      • 1...d2
        • 2.Rc1#
        • 2.Rc2#
        • 2.Rcc3#
        • 2.Rc7#
        • 2.Rc8#
      • 1...Bc4!
  • Keys
    • 1.Bd5!
      • threat
        • 2.Re4#
      • 1...Bxd5+
        • 2.Rc6#
      • 1...Kxe3
        • 2.Rc2#
      • 1...Bxe3
        • 2.Qg7#
      • 1...Sxe3
        • 2.Qa1#
      • 1...Sc3
        • 2.Rxb5#
      • 1...Se4
        • 2.Rxe4#
      • 1...d2
        • 2.Rxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);
      • Threat
        • DUALS(5)
      • Vars
        • K(d);P_SPINS(b),S_FLIGHT,XR(B)::B(F)+R(D)
        • B(f);N_GUARD,SBLOCK,XR(B)::QAB(A)
        • S(a);OGATE,SBLOCK,XR(B)::QAB(A)
        • B(f);::R1(B)
        • S(b);::QAB(A)+R(B),DCHECK,XS(b)
      • Refutation
        • B(h);
  • Actual
    • B(C);
    • Threat
      • R1(B)
    • Vars
      • B(h);CHECK,SBLOCK,XB(C)::B(F)+R(D)
      • K(d);P_SPINS(b),S_FLIGHT,XR(B)::B(F)+R(D)
      • B(f);N_GUARD,SBLOCK,XR(B)::QAB(A)
      • S(a);OGATE,SBLOCK,XR(B)::QAB(A)
      • S(a);SBLOCK::B(F)+R(D),XP(e)
      • S(b);::QAB(A)+R(B),DCHECK,XS(b)
      • P(c);::B(F)+R(D),XP(e)
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