MESON Chess Problem Database

Problem Display
PID: 215811 (8/4B3/2Bnr1p1/1n3b1R/1KPkpQ2/1R5p/3P4/4r1Nq w - - 0 1)

Devos, Germain

Probleemblad, 1980

8/4B3/2Bnr1p1/1n3b1R/1KPkpQ2/1R5p/3P4/4r1Nq

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qf3
      • 2.Sxf3#
    • 1...Qh2
      • 2.Sf3#
    • 1...Ra1
      • 2.Se2#
    • 1...Rb1
      • 2.Se2#
    • 1...Rc1
      • 2.Se2#
    • 1...Rd1
      • 2.Se2#
    • 1...Rf1
      • 2.Se2#
    • 1...Re2
      • 2.Sxe2#
    • 1...Re3
      • 2.dxe3#
    • 1...Rf6
      • 2.Bxf6#
    • 1...Bg4
      • 2.Rd5#
    • 1...Sxc4
      • 2.Bc5#
    • 1...Sf7
      • 2.Bc5#
    • 1...Sc8
      • 2.Bc5#
    • 1...Se8
      • 2.Bc5#
  • Tries
    • 1.Bf6+?
      • 1...Re5
        • 2.Bxe5#
        • 2.Qxe5#
      • 1...Rxf6!
  • Keys
    • 1.Bxe4!
      • threat
        • 2.Rd3#
      • 1...Qxe4
        • 2.Sf3#
      • 1...R1xe4
        • 2.Se2#
      • 1...R6xe4
        • 2.Bf6#
      • 1...Bxe4
        • 2.Rd5#
      • 1...Sxe4
        • 2.Bc5#
      • 1...Qf3
        • 2.Sxf3#
      • 1...Rb1
        • 2.Se2#
      • 1...Re3
        • 2.dxe3#
      • 1...Sc3
        • 2.dxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 12
  • Sets
    • Q(b);N_GUARD::S(A),XQ(b)
    • Q(b);N_GUARD::S(A)
    • R(a);N_GUARD::S(A)
    • R(a);N_GUARD,P_PINR(C)::S(A)
    • R(a);N_GUARD::S(A),XR(a)
    • R(a);OGATE::P(B),XR(a)
    • R(i);N_GUARD::B(I),XR(i)
    • B(g);OGATE::R1(G)
    • S(h);OGATE,XP(E)::B(I)
    • S(h);OGATE::B(I)
  • Tries
    • Try
      • B(I);CHECK
      • Refutation
        • R(i);XB(I)
  • Actual
    • B(H);XP(e)
    • Threat
      • R1(C)
    • Vars
      • Q(b);N_GUARD,P_SPINQ(b),XB(H)::S(A)
      • R(a);N_GUARD,P_SPINR(a),XB(H)::S(A)
      • R(i);N_GUARD,P_SPINR(i),XB(H)::B(I)
      • B(g);OGATE,P_SPINB(g),XB(H)::R1(G)
      • S(h);OGATE,P_SPINS(h),XB(H)::B(I)
      • Q(b);N_GUARD::S(A),XQ(b)
      • R(a);N_GUARD,P_PINR(C)::S(A)
      • R(a);OGATE::P(B),XR(a)
      • S(f);OGATE::P(B),XS(f)
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Developed and maintained by Brian Stephenson.
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