MESON Chess Problem Database

Problem Display
PID: 10753 (K1Bb1BQR/7b/R3pn2/5r1k/7p/6pN/6P1/8 w - - 0 1)

Barnes, Barry Peter

1st Prize, The Problemist, 1967

K1Bb1BQR/7b/R3pn2/5r1k/7p/6pN/6P1/8

#2

8 + 8

5862 An ABC of Chess Problems 1970
4199 Barnes about Chess Problems 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Rf1
      • 2.Qg5#
    • 1...Rf2
      • 2.Qg5#
    • 1...Rf3
      • 2.Qg5#
    • 1...Rf4
      • 2.Sxf4#
      • 2.Qg5#
    • 1...Ra5
      • 2.Sf4#
    • 1...Rb5
      • 2.Sf4#
    • 1...Rc5
      • 2.Sf4#
    • 1...Rd5
      • 2.Sf4#
    • 1...Re5
      • 2.Sf4#
    • 1...Rg5
      • 2.Qxg5#
    • 1...Se4
      • 2.Rxh7#
    • 1...Sd5
      • 2.Rxh7#
    • 1...Sd7
      • 2.Rxh7#
    • 1...Se8
      • 2.Rxh7#
  • Tries
    • 1.Qxh7+?
      • 1...Kg4
        • 2.Qxh4#
      • 1...Sxh7!
  • Keys
    • 1.Qxe6!
      • threat
        • 2.Qxf5#
      • 1...Kg4
        • 2.Qe2#
      • 1...Kg6
        • 2.Qe8#
      • 1...Rf1
        • 2.Qf7#
      • 1...Rf2
        • 2.Qf7#
      • 1...Rf3
        • 2.Qf7#
      • 1...Rf4
        • 2.Qf7#
      • 1...Ra5
        • 2.Qf7#
      • 1...Rb5
        • 2.Qf7#
      • 1...Rc5
        • 2.Qf7#
      • 1...Rd5
        • 2.Qf7#
      • 1...Re5
        • 2.Qf7#
      • 1...Rg5
        • 2.Sf4#
      • 1...Se4
        • 2.Qg6#
      • 1...Sg4
        • 2.Qg6#
      • 1...Sd5
        • 2.Qg6#
      • 1...Sd7
        • 2.Qg6#
      • 1...Se8
        • 2.Qg6#
      • 1...Sg8
        • 2.Qg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 13
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(c);N_GUARD::QAR1(G)
    • R(c);N_GUARD,P_PINR(C)::S(B)
    • R(c);N_GUARD::S(B)
    • R(c);N_GUARD::QAR1(G),XR(c)
    • S(f);N_GUARD::R(H),XB(g)
  • Tries
    • Try
      • Q(G);CHECK,XB(g)
      • Vars
        • K(d);OGATE,S_FLIGHT::QAR1(G),XP(b)
      • Refutation
        • S(f);P_SPINS(f),XQ(G)
  • Actual
    • Q(G);XP(e)
    • Threat
      • QAR2(G),XR(c)
    • Vars
      • K(d);N_SPINB(g),P_SPINR(c),S_FLIGHT::QAB(G)
      • K(d);N_SPINB(g),P_SPINS(f),S_FLIGHT::QAB(G)
      • R(c);::QAB(G)
      • R(c);P_PINR(C)::QAB(G)
      • R(c);N_GUARD,SBLOCK::S(B)
      • S(f);OGATE::QAB1(G)
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