MESON Chess Problem Database

Problem Display
PID: 146047 (B7/K2Qprp1/8/2R5/3p1k1P/4b2p/b4Pnq/2Br4 w - - 0 1)

Pape, Edouard

Good Companions (January), 1918

B7/K2Qprp1/8/2R5/3p1k1P/4b2p/b4Pnq/2Br4

#2

7 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Re1
      • 2.Qxd4#
    • 1...Rf1
      • 2.Qxd4#
    • 1...Rg1
      • 2.Qxd4#
    • 1...Rh1
      • 2.Qxd4#
    • 1...Rf5
      • 2.Qxf5#
    • 1...Bd2
      • 2.Qxd4#
    • 1...d3
      • 2.Qd4#
  • Keys
    • 1.Rg5!
      • threat
        • 2.Qg4#
      • 1...d3+
        • 2.Qd4#
      • 1...Rf5
        • 2.Qxf5#
      • 1...Qg3
        • 2.fxg3#
      • 1...Be6
        • 2.Qc7#
      • 1...e5
        • 2.Rg4#
      • 1...e6
        • 2.Qxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • R(a);N_GUARD::QAR2(F),XP(g)
    • R(j);N_GUARD::QAR1(F),XR(j)
    • B(e);S_CUTR(a)::QAR2(F),XP(g)
    • P(g);P_PINR(D),S_CUTR(a)::QAR2(F)
  • Actual
    • R(D);
    • Threat
      • QAR1(F)
    • Vars
      • P(g);CHECK,S_CUTR(a)::QAR2(F)
      • R(j);N_GUARD::QAR1(F),XR(j)
      • Q(d);OGATE::P(B),XQ(d)
      • B(b);S_CUTP(i)::QAB(F)
      • P(i);P_PINQ(F),SBLOCK::R1(D)
      • P(i);OGATE,P_PINQ(F)::QAR(F),XR(j)
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