MESON Chess Problem Database
Problem Display
PID: 184996 (8/K1p4B/1Np2R2/1p2k1P1/b3r3/B1P1pp2/7N/2QqR1b1 w - - 0 1)
Fontaine, Leon
Bulletin Ouvrier des Echecs, 1948
#2
10 + 10
| 15601 | Albrecht-Leiss-Degener Collection | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qc2
- 2.Sxf3#
- 1...Qb3
- 2.Sxf3#
- 1...Qxc1
- 2.Sxf3#
- 1...Qxe1
- 2.Sxf3#
- 1...Qd2
- 2.Sxf3#
- 1...Qd3
- 2.Sxf3#
- 1...Qd4
- 2.Sxf3#
- 1...Qd5
- 2.Sxf3#
- 1...Qd6
- 2.Sxf3#
- 1...Qd7
- 2.Sxf3#
- 1...Qd8
- 2.Sxf3#
- 1...Rg4
- 2.Sxg4#
- 1...e2
- 2.Sxf3#
- 1...Qc2
- Tries
- 1.Bd6+?
- 1...Qxd6
- 2.Sxf3#
- 1...cxd6!
- 1...Qxd6
- 1.Rxd1?
- threat
- 2.Sxf3#
- 2.Sd7#
- 1...Bxh2
- 2.Sd7#
- 1...cxb6
- 2.Sxf3#
- 2.Bd6#
- 1...Rd4
- 2.Sxf3#
- 2.cxd4#
- 1...Rf4
- 2.Sd7#
- 1...e2
- 2.Sxf3#
- 1...f2
- 2.Sf3#
- 2.Sd7#
- 1...Bxd1!
- threat
- 1.Qxe3?
- threat
- 2.Sg4#
- 2.Qf4#
- 2.Qxe4#
- 1...Qxe1
- 2.Sxf3#
- 2.Sg4#
- 1...Rxe3
- 2.Sg4#
- 1...Bxh2
- 2.Qxe4#
- 1...cxb6
- 2.Qxe4#
- 1...Qc2
- 2.Sxf3#
- 2.Sg4#
- 2.Qf4#
- 1...Qe2
- 2.Sg4#
- 1...Qb1
- 2.Sxf3#
- 2.Sg4#
- 2.Qf4#
- 1...Qc1
- 2.Sxf3#
- 2.Sg4#
- 2.Qxe4#
- 1...Qd2
- 2.Sxf3#
- 2.Sg4#
- 2.Qxe4#
- 1...Qd3
- 2.Sxf3#
- 2.Sg4#
- 2.Qf4#
- 1...Qd4
- 2.Sxf3#
- 2.Sg4#
- 2.Qf4#
- 2.cxd4#
- 1...Qd5
- 2.Sxf3#
- 2.Sg4#
- 2.Qf4#
- 1...Qd7
- 2.Sxf3#
- 2.Qf4#
- 2.Qxe4#
- 1...Bc2
- 2.Sg4#
- 2.Qf4#
- 1...f2
- 2.Qf4#
- 2.Qg3#
- 2.Qxe4#
- 1...Bxe3!
- threat
- 1.Qxd1?
- threat
- 2.Sxf3#
- 2.Sd7#
- 1...Bxh2
- 2.Sd7#
- 1...cxb6
- 2.Sxf3#
- 2.Bd6#
- 2.Qd6#
- 1...Rd4
- 2.Sxf3#
- 2.Qxd4#
- 2.cxd4#
- 1...Rf4
- 2.Sd7#
- 1...e2
- 2.Sxf3#
- 1...f2
- 2.Sf3#
- 2.Sd7#
- 1...Bxd1!
- threat
- 1.Bd6+?
- Keys
- 1.Qd2!
- threat
- 2.Sd7#
- 1...Qxd2
- 2.Sxf3#
- 1...exd2
- 2.Sg4#
- 2.Rxe4#
- 1...cxb6
- 2.Bd6#
- 1...Rd4
- 2.cxd4#
- 1...e2
- 2.Sxf3#
- threat
- 1.Qd2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 11
- Sets
- Q(a);N_GUARD::S(C),XP(d)
- Q(a);N_GUARD,XQ(A)::S(C),XP(d)
- Q(a);N_GUARD,XR(B)::S(C),XP(d)
- Q(a);N_GUARD,P_PINS(G)::S(C),XP(d)
- R(f);N_GUARD,P_SPINP(c)::S(C),XR(f)
- P(c);P_PINS(G),S_CUTQ(a)::S(C),XP(d)
- Tries
- Try
- B(D);CHECK
- Vars
- Q(a);XB(D)::S(C),XP(d)
- Refutation
- P(j);XB(D)
- Try
- R(B);XQ(a)
- Threat
- DUALS(2)
- Vars
- B(b);XS(C)::S(G)
- R(f);::S(G)
- P(c);P_PINS(G)::S(C),XP(d)
- Refutation
- B(e);XR(B)
- Try
- Q(A);P_PINR(f),XP(c)
- Threat
- DUALS(3)
- Vars
- R(f);XQ(A)::S(C)
- B(b);XS(C)::QAR1(A),XR(f)
- P(j);XS(G)::QAR1(A),XR(f)
- Q(a);::S(C)
- Refutation
- B(b);N_SPINR(f),P_PINS(G),XQ(A)
- Try
- Q(A);XQ(a)
- Threat
- DUALS(2)
- Vars
- B(b);XS(C)::S(G)
- R(f);P_SPINP(c)::S(G)
- P(c);P_PINS(G)::S(C),XP(d)
- Refutation
- B(e);XQ(A)
- Try
- Actual
- Q(A);
- Threat
- S(G)
- Vars
- Q(a);N_GUARD,XQ(A)::S(C),XP(d)
- P(j);N_GUARD,XS(G)::B(D)
- R(f);OGATE,P_SPINP(c)::P(E),XR(f)
- P(c);P_PINS(G),S_CUTQ(a)::S(C),XP(d)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).