MESON Chess Problem Database

Problem Display
PID: 48701 (4R1KB/4p1R1/1n1prp2/3Pkr1p/1p2NpPP/p4P2/3Q4/8 w - - 0 1)

Riczu, Lajos

Comm., Het Belgisch Schaakbord (L'Echiquier Belge), 1977-1978

4R1KB/4p1R1/1n1prp2/3Pkr1p/1p2NpPP/p4P2/3Q4/8

#2

10 + 11

5110 Bekroonde Problemen 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Rg5
      • 2.Rxg5#
  • Tries
    • 1.Sg5?
      • threat
        • 2.Sf7#
      • 1...Rxg5
        • 2.Rxg5#
      • 1...fxg5!
    • 1.Rgxe7?
      • threat
        • 2.Rxe6#
      • 1...Rxe7
        • 2.Rxe7#
      • 1...Rg5+!
    • 1.Rexe7?
      • threat
        • 2.Rxe6#
      • 1...Rxe7
        • 2.Rxe7#
      • 1...Sxd5!
  • Keys
    • 1.Sxf6!
      • 1...Kxf6
        • 2.Rg5#
      • 1...Rfxf6
        • 2.Rg5#
      • 1...Rexf6
        • 2.Rgxe7#
      • 1...Sxd5
        • 2.Sd7#
      • 1...hxg4
        • 2.Sxg4#
      • 1...exf6
        • 2.Rxe6#
      • 1...Rg5
        • 2.Rxg5#
      • 1...Sa4
        • 2.Sd7#
      • 1...Sc4
        • 2.Sd7#
      • 1...Sd7
        • 2.Sxd7#
      • 1...Sa8
        • 2.Sd7#
      • 1...Sc8
        • 2.Sd7#
      • 1...a2
        • 2.Qb2#
      • 1...b3
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
    • R(e);OGATEB,P_PINR(G)::R(G),XR(e)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • R(e);OGATE,P_PINR(G),XS(C)::R(G),XR(e)
      • Refutation
        • P(j);XS(C)
    • Try
      • R(G);P_PINP(j),P_PINR(i),XP(k)
      • Threat
        • R1(G),XR(i)
      • Vars
        • R(i);OGATE,XR(G)::R(H),XR(i)
      • Refutation
        • R(e);CHECK
    • Try
      • R(H);P_PINR(i),XP(k)
      • Threat
        • R1(H),XR(i)
      • Vars
        • R(i);N_SPINR(i),OGATE,XR(H)::R(G),XR(i)
      • Refutation
        • S(g);XP(F)
  • Actual
    • S(C);XP(j)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XS(C)::B(J)+R(G)
      • R(e);OGATEB,XS(C)::R(G)
      • R(i);OGATEB,P_SPINP(k),XS(C)::R(G),XP(k)
      • S(g);N_GUARD,XP(F)::S(C)
      • P(f);XP(D)::S(C),XP(f)
      • P(k);OGATE,P_SPINR(i),XS(C)::R1(H),XR(i)
      • R(e);OGATEB,P_PINR(G)::R(G),XR(e)
      • S(g);N_GUARD::S(C)
      • S(g);N_GUARD::S(C),XS(g)
      • P(a);N_GUARD::QAB(A)
      • P(b);N_GUARD::QAB(A)
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