MESON Chess Problem Database

Problem Display
PID: 50174 (4R3/4NKP1/1pP1N1R1/p2pkp2/1B3pr1/3pbP1B/b5P1/4Q3 w - - 0 1)

Savournin, Jacques

1st HM., Het Belgisch Schaakbord (L'Echiquier Belge), 1982-1983

4R3/4NKP1/1pP1N1R1/p2pkp2/1B3pr1/3pbP1B/b5P1/4Q3

#2

12 + 10

5110 Bekroonde Problemen 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg6
      • 2.Sxg6#
  • Tries
    • 1.Sd4?
      • threat
        • 2.Sexf5#
      • 1...Kxd4
        • 2.Qc3#
      • 1...Rxg6!
    • 1.Sxf5?
      • threat
        • 2.Sed4#
      • 1...Kxf5
        • 2.Rg5#
      • 1...Rxg6
        • 2.Bd6#
      • 1...d4!
    • 1.Bc3+?
      • 1...Kd6
        • 2.Rd8#
      • 1...d4!
    • 1.Qc3+?
      • 1...Bd4
        • 2.Qxd4#
      • 1...d4!
    • 1.Qa1+?
      • 1...Bd4
        • 2.Qxd4#
      • 1...d4!
    • 1.g8Q?
      • threat
        • 2.Qg7#
        • 2.Qh8#
      • 1...Rxg6
        • 2.Sxg6#
      • 1...Rh4
        • 2.Qg7#
      • 1...axb4!
  • Keys
    • 1.Sxf4!
      • threat
        • 2.Qxe3#
      • 1...d4+
        • 2.Sed5#
      • 1...Kd4
        • 2.Qc3#
      • 1...Kxf4
        • 2.Bd6#
      • 1...Rxf4
        • 2.Sxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(e);XR(H)::S(I),XR(e)
  • Tries
    • Try
      • S(G);
      • Threat
        • R(L)+S(I),XP(i)
      • Vars
        • K(h);N_SPINB(c),OGATEB,S_FLIGHT,XS(G)::QAB1(A)
      • Refutation
        • R(e);XR(H)
    • Try
      • S(I);XP(i)
      • Threat
        • R(L)+S(G)
      • Vars
        • K(h);N_SPINB(c),OGATEB,P-FLIGHT,P_SPINR(e),XS(I)::R1(H)
        • R(e);XR(H)::B(E)
      • Refutation
        • P(g);P_PINS(G)
    • Try
      • B(E);CHECK
      • Vars
        • K(h);N_SPINB(c),S_FLIGHT::R(L)
      • Refutation
        • P(g);P_PINS(G),P_SPINP(g)
    • Try
      • Q(A);CHECK,N_PINB(c)
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAB1(A),XB(c)
      • Refutation
        • P(g);P_PINS(G),P_SPINP(g)
    • Try
      • Q(A);CHECK,N_PINB(c)
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAB1(A),XB(c)
      • Refutation
        • P(g);P_PINS(G),P_SPINP(g)
    • Try
      • P(K);
      • Threat
        • DUALS(2)
      • Vars
        • R(e);XR(H)::S(I),XR(e)
        • R(e);::QAB(K)
      • Refutation
        • P(f);XB(E)
  • Actual
    • S(G);XP(d)
    • Threat
      • QAR2(A),XB(c)
    • Vars
      • P(g);CHECK,SBLOCK::R(L)+S(I)
      • K(h);N_SPINB(c),S_FLIGHT::QAB1(A)
      • K(h);N_SPINB(c),S_FLIGHT,XS(G)::B(E)
      • R(e);SBLOCK,XS(G)::R(L)+S(I),XP(i)
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