MESON Chess Problem Database

Problem Display
PID: 184982 (b3N1K1/2rp1P2/8/2pPkN2/6P1/3R2P1/4rB1n/5n1Q w - - 0 1)

Stubbs, Arthur Goodwin

The Observer, 1929

(First published on Sun Aug 4 1929)

b3N1K1/2rp1P2/8/2pPkN2/6P1/3R2P1/4rB1n/5n1Q

#2

10 + 8

15239 Valois Notebooks 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd5
      • 2.Qxd5#
    • 1...Sxg3
      • 2.Bxg3#
    • 1...c4
      • 2.Bd4#
  • Keys
    • 1.Sfd6!
      • threat
        • 2.Sc4#
      • 1...Bxd5
        • 2.Qxd5#
      • 1...Sxg3
        • 2.Bxg3#
      • 1...Sxg4
        • 2.Qh5#
      • 1...Rc2
        • 2.Qe4#
      • 1...Re4
        • 2.Qxe4#
      • 1...Sd2
        • 2.Qa1#
      • 1...Se3
        • 2.Qe4#
      • 1...Sf3
        • 2.Qh8#
      • 1...c4
        • 2.Bd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • B(h);OGATE,P_PINP(H),XP(F)::QAR1(A),XB(h)
    • S(a);OGATE,XP(D)::B(B),XS(a)
    • P(d);N_GUARD::B(B)
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • B(h);OGATE,P_PINP(H),XP(F)::QAR1(A),XB(h)
      • S(a);OGATE,XP(D)::B(B),XS(a)
      • S(c);OGATE,XP(E)::QAR(A)
      • R(b);N_GUARD::QAR1(A)
      • R(b);N_GUARD::QAR1(A),XR(b)
      • S(a);OGATE::QAB(A)
      • S(a);S_CUTR(b)::QAR1(A)
      • S(c);OGATE::QAB(A)
      • P(d);N_GUARD::B(B)
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