MESON Chess Problem Database

Problem Display
PID: 54374 (B4NK1/1q6/3pQ1p1/7p/pn1p2R1/Rb3kp1/2N1p1p1/3rn1B1 w - - 0 1)

Gamage, Frederick

St. John Globe, 1904

B4NK1/1q6/3pQ1p1/7p/pn1p2R1/Rb3kp1/2N1p1p1/3rn1B1

#2

8 + 14

3132 The Good Companion Two-Mover 1922
81 Chess 1957
5397 Frederick Gamage (Prcic) 2004
145 StrateGems 2004
56 The Problemist 2006

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Bxe4#
    • 1...Ra1
      • 2.Sxd4#
    • 1...Rb1
      • 2.Sxd4#
    • 1...Rc1
      • 2.Sxd4#
    • 1...Rd2
      • 2.Sxe1#
    • 1...Rd3
      • 2.Sxe1#
    • 1...Sed3
      • 2.Sxd4#
    • 1...Sbd3
      • 2.Sxd4#
    • 1...Sd5
      • 2.Qe4#
    • 1...d3
      • 2.Sd4#
  • Tries
    • 1.Rxb3+?
      • 1...Rd3
        • 2.Sxe1#
        • 2.Sxd4#
      • 1...Sed3
        • 2.Sxd4#
      • 1...Sbd3
        • 2.Sxd4#
      • 1...d3
        • 2.Sd4#
      • 1...axb3!
  • Keys
    • 1.Rh4!
      • threat
        • 2.Qf7#
      • 1...Rd3
        • 2.Sxe1#
      • 1...Sed3
        • 2.Sxd4#
      • 1...Sbd3
        • 2.Sxd4#
      • 1...Sd5
        • 2.Qe4#
      • 1...Sc6
        • 2.Qd5#
      • 1...d3
        • 2.Sd4#
      • 1...d5
        • 2.Qf6#

There are these afters: 68332

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • Q(n);OGATE::B(F),XQ(n)
    • R(a);N_GUARD::S(B),XP(j)
    • R(a);N_GUARD::S(B),XS(b)
    • R(a);N_GUARD,N_SPINB(e)::S(B),XS(b)
    • S(b);N_SPINB(e),S_CUTR(a)::S(B),XP(j)
    • S(i);N_SPINB(e),S_CUTR(a)::S(B),XP(j)
    • S(i);N_PINQ(E),N_SPINQ(n)::QAB1(E)
    • P(j);N_SPINB(e),S_CUTR(a)::S(B)
  • Tries
    • Try
      • R(C);CHECK,N_SPINQ(E),XB(e)
      • Vars
        • S(b);P_SPINS(b)::S(B),XP(j)
        • S(i);P_SPINS(i)::S(B),XP(j)
        • P(j);P_SPINP(j)::S(B)
      • Refutation
        • P(h);XR(C)
  • Actual
    • R(D);
    • Threat
      • QAR(E)
    • Vars
      • R(a);N_GUARD,N_SPINB(e)::S(B),XS(b)
      • S(b);N_SPINB(e),S_CUTR(a)::S(B),XP(j)
      • S(i);N_SPINB(e),S_CUTR(a)::S(B),XP(j)
      • S(i);N_PINQ(E),N_SPINQ(n)::QAB1(E)
      • S(i);N_GUARD,N_SPINQ(n),S_CUTQ(n)::QAB(E)
      • P(j);N_SPINB(e),S_CUTR(a)::S(B)
      • P(l);N_PINQ(E),N_SPINQ(n)::QAR(E)
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