MESON Chess Problem Database

Problem Display
PID: 103157 (Q7/2pr1p2/8/5N1B/2b4p/R1BP3r/n1k5/KN3R1n w - - 0 1)

Marceil, Andre

Bulletin de la FFE, 1929

Q7/2pr1p2/8/5N1B/2b4p/R1BP3r/n1k5/KN3R1n

#2

9 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd3
      • 2.Qa4#
    • 1...Sxc3
      • 2.Rxc3#
  • Tries
    • 1.Bd1+?
      • 1...Kc1
        • 2.Bb3#
        • 2.Ba4#
        • 2.Bb2#
        • 2.Bd2#
      • 1...Kxd3!
    • 1.Rf2+?
      • 1...Kc1
        • 2.Bb2#
      • 1...Kxd3
        • 2.Rd2#
      • 1...Sxf2!
    • 1.Rxa2+?
      • 1...Kb3
        • 2.Bd1#
        • 2.Rb2#
        • 2.Qa3#
        • 2.Qa4#
      • 1...Kxd3
        • 2.Be2#
        • 2.Rd1#
        • 2.Rd2#
      • 1...Bxa2!
    • 1.Qg2+?
      • 1...Kxd3
        • 2.Rd1#
        • 2.Qe2#
      • 1...Sf2!
  • Keys
    • 1.Qe4!
      • threat
        • 2.Qe2#
      • 1...Rhxd3
        • 2.Se3#
      • 1...Rdxd3
        • 2.Sd4#
      • 1...Bxd3
        • 2.Qa4#
      • 1...Sxc3
        • 2.Rxc3#
      • 1...Rh2
        • 2.Se3#
      • 1...Re3
        • 2.Sxe3#
      • 1...Re7
        • 2.Sd4#
      • 1...Sg3
        • 2.Se3#
      • 1...Sc1
        • 2.Bd1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • B(e);N_GUARD,SBLOCK,XP(F)::QAB(I)
    • S(b);OGATE,XB(E)::R1(D),XS(b)
  • Tries
    • Try
      • B(H);CHECK
      • Refutation
        • K(c);S_FLIGHT,XP(F)
    • Try
      • R(C);CHECK
      • Vars
        • K(c);P-FLIGHT::B(E)
        • K(c);S_FLIGHT,XP(F)::R1(C)
      • Refutation
        • S(a);XR(C)
    • Try
      • R(D);CHECK,XS(b)
      • Refutation
        • B(e);XR(D)
    • Try
      • Q(I);CHECK
      • Refutation
        • S(a);P_SPINS(a)
  • Actual
    • Q(I);
    • Threat
      • QAR2(I)
    • Vars
      • R(d);N_GUARD,P_SPINR(d),XP(F)::S(G)
      • R(h);N_GUARD,P_SPINR(h),XP(F)::S(G)
      • B(e);OGATE,P_SPINB(e),SBLOCK,XP(F)::QAB(I)
      • S(b);OGATE,XB(E)::R1(D),XS(b)
      • R(d);N_GUARD::S(G)
      • R(d);N_GUARD::S(G),XR(d)
      • R(h);N_GUARD::S(G)
      • S(a);S_CUTR(d)::S(G)
      • S(b);SBLOCK::B(H)
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