MESON Chess Problem Database

Problem Display
PID: 21934 (3r4/RP5q/R3Npp1/1krn3Q/3B1p2/1Ppn2p1/N7/6KB w - - 0 1)

Pape, Edouard

1st Prize, Good Companions (October), 1922

3r4/RP5q/R3Npp1/1krn3Q/3B1p2/1Ppn2p1/N7/6KB

#2

10 + 11

3132 The Good Companion Two-Mover 1922
797 Bulletin de la FFE 1923
3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Rb6#
    • 1...Rc6
      • 2.Ra5#
    • 1...Rc7
      • 2.Rb6#
    • 1...Rcc8
      • 2.Rb6#
    • 1...Se3
      • 2.Bc6#
    • 1...Sb4
      • 2.Sxc3#
    • 1...Sb6
      • 2.Ra5#
    • 1...Sc7
      • 2.Bc6#
    • 1...Se7
      • 2.Sc7#
  • Tries
    • 1.Sc7+?
      • 1...Rxc7
        • 2.Rb6#
      • 1...Sxc7
        • 2.Bc6#
      • 1...Qxc7!
    • 1.Bf2?
      • threat
        • 2.Sd4#
      • 1...Rc4
        • 2.Rb6#
      • 1...Rc6
        • 2.Ra5#
      • 1...Rc7
        • 2.Rb6#
      • 1...Rcc8
        • 2.Rb6#
      • 1...Se3
        • 2.Bc6#
      • 1...S5b4
        • 2.Sxc3#
      • 1...Sb6
        • 2.Ra5#
      • 1...Sc7
        • 2.Bc6#
      • 1...Se7
        • 2.Sc7#
      • 1...gxf2+!
  • Keys
    • 1.Be3!
      • threat
        • 2.Sd4#
      • 1...Sxe3
        • 2.Bc6#
      • 1...Rc4
        • 2.Rb6#
      • 1...Rc6
        • 2.Ra5#
      • 1...Rc7
        • 2.Rb6#
      • 1...Rcc8
        • 2.Rb6#
      • 1...S5b4
        • 2.Sxc3#
      • 1...Sb6
        • 2.Ra5#
      • 1...Sc7
        • 2.Bc6#
      • 1...Se7
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • R(f);P_SPINS(g)::R1(G)
    • R(f);P_SPINS(g),SBLOCK::R1(G)
    • S(g);OGATE,P_SPINR(f)::B(B)
    • S(g);N_GUARD,P_SPINR(f),SBLOCK::S(C),XP(a)
    • S(g);P_SPINR(f),SBLOCK::R1(G)
    • S(g);N_GUARD,P_SPINR(f),S_CUTQ(j)::S(H)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • R(f);P_SPINS(g),XS(H)::R1(G)
        • S(g);OGATE,P_SPINR(f),XS(H)::B(B)
      • Refutation
        • Q(j);XS(H)
    • Try
      • B(E);
      • Threat
        • S(H)
      • Vars
        • R(f);P_SPINS(g)::R1(G)
        • R(f);P_SPINS(g),SBLOCK::R1(G)
        • S(g);OGATE,P_SPINR(f)::B(B)
        • S(g);N_GUARD,P_SPINR(f),SBLOCK::S(C),XP(a)
        • S(g);P_SPINR(f),SBLOCK::R1(G)
        • S(g);N_GUARD,P_SPINR(f),S_CUTQ(j)::S(H)
      • Refutation
        • P(c);CHECK,XB(E)
  • Actual
    • B(E);
    • Threat
      • S(H)
    • Vars
      • S(g);OGATE,P_SPINR(f),XB(E)::B(B)
      • R(f);P_SPINS(g)::R1(G)
      • R(f);P_SPINS(g),SBLOCK::R1(G)
      • S(g);N_GUARD,P_SPINR(f),SBLOCK::S(C),XP(a)
      • S(g);P_SPINR(f),SBLOCK::R1(G)
      • S(g);OGATE,P_SPINR(f)::B(B)
      • S(g);N_GUARD,P_SPINR(f),S_CUTQ(j)::S(H)
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