MESON Chess Problem Database

Problem Display
PID: 108854 (6Bn/1KR1Nr2/4k1p1/2Ppn1P1/3P4/4Nb2/6Q1/8 w - - 0 1)

Legentil, Georges

Bulletin des Problemistes de France, 1945-1946

6Bn/1KR1Nr2/4k1p1/2Ppn1P1/3P4/4Nb2/6Q1/8

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Qxd5#
    • 1...Be2
      • 2.Qxd5#
    • 1...Bg4
      • 2.Qxd5#
    • 1...Bh5
      • 2.Qxd5#
  • Tries
    • 1.S3f5?
      • threat
        • 2.Sg7#
      • 1...Sd7
        • 2.Rc6#
      • 1...gxf5!
    • 1.S7f5?
      • threat
        • 2.Sg7#
        • 2.Re7#
      • 1...Sc6
        • 2.Sg7#
      • 1...Sd7
        • 2.Rc6#
      • 1...gxf5!
    • 1.Sc8?
      • threat
        • 2.Re7#
      • 1...Sd7
        • 2.Rc6#
      • 1...Sc6!
    • 1.Qh2?
      • threat
        • 2.Qxe5#
      • 1...Sd7
        • 2.Qd6#
      • 1...Sd3
        • 2.Qd6#
      • 1...Sg4
        • 2.Qd6#
      • 1...Sc6
        • 2.Qd6#
      • 1...Sc4!
    • 1.Qg3?
      • threat
        • 2.Qxe5#
      • 1...Sd7
        • 2.Qd6#
      • 1...Sd3
        • 2.Qd6#
      • 1...Sg4
        • 2.Qd6#
      • 1...Sc6
        • 2.Qd6#
      • 1...Sc4!
  • Keys
    • 1.S7xd5!
      • threat
        • 2.Re7#
      • 1...Bxd5+
        • 2.Qxd5#
      • 1...Sc6
        • 2.Sf4#
      • 1...Sd7
        • 2.Rc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • B(a);OGATE::QAB1(A),XP(b)
  • Tries
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • S(c);N_GUARD,SBLOCK::R(G)
      • Refutation
        • P(e);XS(B)
    • Try
      • S(H);P_SPINR(G)
      • Threat
        • DUALS(2)
      • Vars
        • S(c);::S(H)
        • S(c);N_PINR(G),SBLOCK::R(G)
      • Refutation
        • P(e);XS(H)
    • Try
      • S(H);P_SPINR(G)
      • Threat
        • R1(G)
      • Vars
        • S(c);N_PINR(G),SBLOCK::R(G)
      • Refutation
        • S(c);
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XS(c)
      • Vars
        • S(c);OGATE::QAR1(A)
      • Refutation
        • S(c);
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XS(c)
      • Vars
        • S(c);OGATE::QAR1(A)
      • Refutation
        • S(c);
  • Actual
    • S(H);P_SPINR(G),P_SPINS(H),XP(b)
    • Threat
      • R1(G)
    • Vars
      • B(a);CHECK,OGATE,XS(H)::QAB1(A),XB(a)
      • S(c);N_PINS(H)::S(H)
      • S(c);N_PINR(G),SBLOCK::R(G)
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