MESON Chess Problem Database

Problem Display
PID: 101404 (4B2b/Npq4p/1p2r1n1/3R2Q1/1rk2p2/P1N1n2K/P2P4/8 w - - 0 1)

Pape, Edouard

Good Companions (December), 1916

4B2b/Npq4p/1p2r1n1/3R2Q1/1rk2p2/P1N1n2K/P2P4/8

#2

9 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra4
      • 2.Bb5#
    • 1...Rb5
      • 2.Bxb5#
    • 1...Bxc3
      • 2.d3#
    • 1...Sxd5
      • 2.Qxd5#
    • 1...Se5
      • 2.Qxf4#
  • Keys
    • 1.Sab5!
      • threat
        • 2.d3#
      • 1...Rxb5
        • 2.Bxb5#
      • 1...Sxd5
        • 2.Qxd5#
      • 1...Bd4
        • 2.Rxd4#
      • 1...Se5
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(b);N_GUARD::B(I)
    • R(b);N_GUARD::B(I),XR(b)
    • B(k);SBLOCK,XS(D)::P(B)
    • S(a);OGATE,XR(F)::QAB1(G),XS(a)
    • S(g);N_GUARD,S_CUTB(k),S_CUTQ(i),S_CUTR(f)::QAR(G),XP(d)
  • Actual
    • S(H);
    • Threat
      • P(B)
    • Vars
      • R(b);OGATE,XS(H)::B(I),XR(b)
      • S(a);OGATE,XR(F)::QAB1(G),XS(a)
      • B(k);N_GUARD::R1(F),XB(k)
      • S(g);N_GUARD,S_CUTB(k),S_CUTQ(i),S_CUTR(f)::QAR(G),XP(d)
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