MESON Chess Problem Database

Problem Display
PID: 103540 (8/6N1/1prp4/1r3n1P/1b3k1P/3R3K/b2P1pBP/Q1B4n w - - 0 1)

Fegan, Bertram George

BCF 001. Ty., 1929-1930

8/6N1/1prp4/1r3n1P/1b3k1P/3R3K/b2P1pBP/Q1B4n

#2

10 + 10

56 The Problemist 1930
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Se6#
    • 1...Rc4
      • 2.Se6#
    • 1...Bb1
      • 2.Se6#
    • 1...Be6
      • 2.Sxe6#
    • 1...Se3
      • 2.Qd4#
      • 2.dxe3#
    • 1...Sd4
      • 2.Qxd4#
    • 1...Sh6
      • 2.Qd4#
    • 1...Se7
      • 2.Qd4#
  • Tries
    • 1.Rd4+?
      • 1...Sxd4
        • 2.Qxd4#
      • 1...Ke5!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Rd4#
      • 1...Bxd2
        • 2.Bxd2#
      • 1...Rd5
        • 2.Se6#
      • 1...Re5
        • 2.Qg5#
      • 1...Rc3
        • 2.dxc3#
      • 1...Rc4
        • 2.Se6#
      • 1...Bb1
        • 2.Se6#
      • 1...Bd5
        • 2.Qxf5#
      • 1...Bc3
        • 2.dxc3#
      • 1...Bc5
        • 2.Qxf5#
      • 1...Sg3
        • 2.hxg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 4
  • Sets
    • R(f);S_CUTB(b)::S(J)
    • R(i);S_CUTB(b)::S(J)
    • B(b);N_GUARD::S(J)
    • B(b);N_GUARD::S(J),XB(b)
    • S(g);N_GUARD::QAR2(A),XS(g)
    • S(g);N_GUARD::QAR2(A)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • S(g);OGATE,XR(F)::QAR2(A),XS(g)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • Q(A);P_PINS(g)
    • Threat
      • R(F)
    • Vars
      • B(d);OGATE,P_SPINB(d),XP(C)::B(B),XB(d)
      • R(f);S_CUTB(b)::S(J)
      • R(f);SBLOCK::QAB1(A)
      • R(i);OGATE,P_PINR(F)::B(B)+P(C),XR(i)
      • R(i);S_CUTB(b)::S(J)
      • B(b);N_GUARD::S(J)
      • B(b);S_CUTR(f)::QAR1(A),XS(g)
      • B(d);OGATE::B(B)+P(C),XB(d)
      • B(d);S_CUTR(f)::QAR1(A),XS(g)
      • S(a);OGATE::P(E),XS(a)
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