MESON Chess Problem Database

Problem Display
PID: 79984 (b1QB1r2/q2n4/1b1pP2N/3nk1p1/p7/4P2B/3N1R2/4R1K1 w - - 0 1)

Baptista, Manuel

2nd Prize, Vida Rotaria-Brasil, 1954

b1QB1r2/q2n4/1b1pP2N/3nk1p1/p7/4P2B/3N1R2/4R1K1

#2

10 + 10

133 The Problemist Supplement 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Rf7
      • 2.Sxf7#
    • 1...Rxd8
      • 2.Sf7#
    • 1...Re8
      • 2.Sf7#
    • 1...Rg8
      • 2.Sf7#
    • 1...Rh8
      • 2.Sf7#
    • 1...Sc5
      • 2.Sg4#
    • 1...Sf6
      • 2.Rf5#
    • 1...Sb8
      • 2.Sg4#
  • Tries
    • 1.Sf3+?
      • 1...Ke4
        • 2.Qc2#
      • 1...Rxf3!
    • 1.Qc3+?
      • 1...Bd4
        • 2.exd4#
      • 1...Sxc3!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Qe4#
      • 1...Sxe3
        • 2.Sg4#
      • 1...Rf4
        • 2.exf4#
      • 1...Bd4
        • 2.exd4#
      • 1...Sc3
        • 2.Sg4#
      • 1...Sb4
        • 2.Sg4#
      • 1...Sf4
        • 2.exf4#
      • 1...S5f6
        • 2.Rf5#
      • 1...Sc7
        • 2.Sg4#
      • 1...Se7
        • 2.Sg4#
      • 1...Sc5
        • 2.Qd4#
      • 1...S7f6
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 9
    • REMOVED MATES = 6
  • Sets
    • R(j);N_GUARD::S(H),XR(j)
    • R(j);N_GUARD,XB(J)::S(H)
    • R(j);N_GUARD::S(H)
    • S(h);::S(H)
    • S(h);S_CUTR(j)::R1(D)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB(I)
      • Refutation
        • R(j);XS(C)
    • Try
      • Q(I);CHECK
      • Vars
        • B(e);OGATE,P_SPINB(e)::R(A)+P(E)DCHECK,XB(e)
      • Refutation
        • S(b);XQ(I)
  • Actual
    • Q(I);
    • Threat
      • QAR1(I)
    • Vars
      • S(b);P_SPINS(b),XP(E)::S(H)
      • R(j);OGATE::R(A)+P(E)DCHECK,XR(j)
      • B(e);OGATE::R(A)+P(E)DCHECK,XB(e)
      • S(b);::S(H)
      • S(b);OGATE::R(A)+P(E)DCHECK,XS(b)
      • S(b);S_CUTR(j)::R1(D)
      • S(h);S_CUTB(e)::QAB1(I)
      • S(h);S_CUTR(j)::S(C)
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