MESON Chess Problem Database
Problem Display
PID: 91811 (1b2Q2r/N1N1BB2/p2K1p2/p5P1/1k6/r1p4R/p7/8 w - - 0 1)
Joseph, Fernand
1st Prize, Fontaine MT, 1978-1979
#2
8 + 9
| 102 | Probleemblad | 1979 |
| 15611 | Schaak-composities 1975-1979 (de Vuyst) | 1982 |
| 5110 | Bekroonde Problemen | 2002 |
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rb3
- 2.Kd5#
- 1...Ra4
- 2.Kc6#
- 2.Kd7#
- 1...Rh4
- 2.Rxh4#
- 1...Rxe8
- 2.Rh4#
- 1...Rf8
- 2.Rh4#
- 1...Rg8
- 2.Rh4#
- 1...Bxa7
- 2.Sxa6#
- 1...Bxc7+
- 2.Kxc7#
- 1...c2
- 2.Kd5#
- 1...a4
- 2.Sc6#
- 1...fxg5
- 2.Ke5#
- 1...f5
- 2.Ke5#
- 1...Rb3
- Tries
- 1.Bd5?
- threat
- 2.Ke6#
- 1...Bxc7+
- 2.Kxc7#
- 1...Rxe8
- 2.Rh4#
- 1...Bxa7
- 2.Sxa6#
- 1...a4
- 2.Sc6#
- 1...Rh7!
- threat
- 1.Rd3?
- threat
- 2.Rd4#
- 1...Bxc7+
- 2.Kxc7#
- 1...Bxa7
- 2.Sxa6#
- 1...Rb3
- 2.Kd5#
- 1...Ra4
- 2.Kc6#
- 2.Kd7#
- 1...a4
- 2.Sc6#
- 1...c2
- 2.Kd5#
- 1...Rh4!
- threat
- 1.Re3?
- threat
- 2.Re4#
- 1...Bxc7+
- 2.Kxc7#
- 1...Bxa7
- 2.Sxa6#
- 1...Rb3
- 2.Kd5#
- 1...Ra4
- 2.Kc6#
- 2.Kd7#
- 1...a4
- 2.Sc6#
- 1...c2
- 2.Kd5#
- 1...f5
- 2.Ke5#
- 1...Rh4!
- threat
- 1.Rf3?
- threat
- 2.Rf4#
- 1...Bxc7+
- 2.Kxc7#
- 1...Bxa7
- 2.Sxa6#
- 1...fxg5
- 2.Ke5#
- 1...Rb3
- 2.Kd5#
- 1...Ra4
- 2.Kc6#
- 2.Kd7#
- 1...a4
- 2.Sc6#
- 1...c2
- 2.Kd5#
- 1...Rh4!
- threat
- 1.Rg3?
- threat
- 2.Rg4#
- 1...Bxc7+
- 2.Kxc7#
- 1...Bxa7
- 2.Sxa6#
- 1...Rb3
- 2.Kd5#
- 1...Ra4
- 2.Kc6#
- 2.Kd7#
- 1...a4
- 2.Sc6#
- 1...c2
- 2.Kd5#
- 1...f5
- 2.Ke5#
- 1...Rh4!
- threat
- 1.Rxh8?
- threat
- 2.Rh4#
- 1...Bxc7+
- 2.Kxc7#
- 1...Bxa7
- 2.Sxa6#
- 1...fxg5
- 2.Ke5#
- 1...Rb3
- 2.Kd5#
- 1...Ra4
- 2.Kc6#
- 2.Kd7#
- 1...a4
- 2.Sc6#
- 1...f5
- 2.Ke5#
- 1...c2!
- threat
- 1.Qa4+?
- 1...Rxa4
- 2.Kc6#
- 2.Kd7#
- 1...Kxa4!
- 1...Rxa4
- 1.Qc6?
- threat
- 2.Kd7#
- 2.Qe4#
- 2.Qc4#
- 1...Bxc7+
- 2.Kxc7#
- 1...Bxa7
- 2.Sxa6#
- 2.Qc4#
- 1...Rb3
- 2.Kd5#
- 2.Ke6#
- 2.Kd7#
- 1...Ra4
- 2.Kd7#
- 2.Qxc3#
- 2.Qc5#
- 1...a4
- 2.Qc5#
- 2.Qb6#
- 1...Rh4
- 2.Kd7#
- 2.Rxh4#
- 1...Re8
- 2.Rh4#
- 2.Qe4#
- 2.Qc4#
- 1...f5
- 2.Ke5#
- 2.Kd7#
- 2.Qc4#
- 1...Rd8+!
- threat
- 1.Qxb8+?
- 1...Rxb8
- 2.Rh4#
- 1...Ka4!
- 1...Rxb8
- 1.gxf6?
- threat
- 2.Ke5#
- 1...Bxc7+
- 2.Kxc7#
- 1...Rxe8
- 2.Rh4#
- 1...Bxa7
- 2.Sxa6#
- 1...a4
- 2.Sc6#
- 1...Rh5!
- threat
- 1.Bd5?
- Keys
- 1.Qd7!
- threat
- 2.Qg4#
- 1...Bxc7+
- 2.Kxc7#
- 1...Bxa7
- 2.Sxa6#
- 1...Rb3
- 2.Kd5#
- 1...Ra4
- 2.Kc6#
- 1...a4
- 2.Sc6#
- 1...Rh4
- 2.Rxh4#
- 1...Rd8
- 2.Rh4#
- 1...f5
- 2.Ke5#
- threat
- 1.Qd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- R(b);SBLOCK::B(F)+K(C)
- R(i);N_GUARD::R(A),XR(i)
- R(i);N_GUARD,XQ(H)::R(A)
- R(i);N_GUARD::R(A)
- B(h);N_PINS(E),XS(D)::S(E),XP(f)
- B(h);CHECK,XS(E)::B(F)+K(C),XB(h)
- P(c);::B(F)+K(C)
- P(e);SBLOCK::S(D)
- P(g);XP(B)::B(F)+K(C)
- P(g);::B(F)+K(C)
- Tries
- Try
- B(G);
- Threat
- B(F)+K(C)
- Vars
- B(h);CHECK,XS(E)::B(F)+K(C),XB(h)
- R(i);N_GUARD,XQ(H)::R(A)
- B(h);N_PINS(E),XS(D)::S(E),XP(f)
- P(e);SBLOCK::S(D)
- Refutation
- R(i);
- Try
- R(A);
- Threat
- R(A)
- Vars
- B(h);CHECK,XS(E)::B(F)+K(C),XB(h)
- B(h);N_PINS(E),XS(D)::S(E),XP(f)
- R(b);SBLOCK::B(F)+K(C)
- P(e);SBLOCK::S(D)
- P(c);::B(F)+K(C)
- Refutation
- R(i);
- Try
- R(A);
- Threat
- R(A)
- Vars
- B(h);CHECK,XS(E)::B(F)+K(C),XB(h)
- B(h);N_PINS(E),XS(D)::S(E),XP(f)
- R(b);SBLOCK::B(F)+K(C)
- P(e);SBLOCK::S(D)
- P(c);::B(F)+K(C)
- P(g);::B(F)+K(C)
- Refutation
- R(i);
- Try
- R(A);
- Threat
- R(A)
- Vars
- B(h);CHECK,XS(E)::B(F)+K(C),XB(h)
- B(h);N_PINS(E),XS(D)::S(E),XP(f)
- P(g);XP(B)::B(F)+K(C)
- R(b);SBLOCK::B(F)+K(C)
- P(e);SBLOCK::S(D)
- P(c);::B(F)+K(C)
- Refutation
- R(i);
- Try
- R(A);
- Threat
- R(A)
- Vars
- B(h);CHECK,XS(E)::B(F)+K(C),XB(h)
- B(h);N_PINS(E),XS(D)::S(E),XP(f)
- R(b);SBLOCK::B(F)+K(C)
- P(e);SBLOCK::S(D)
- P(c);::B(F)+K(C)
- P(g);::B(F)+K(C)
- Refutation
- R(i);
- Try
- R(A);XR(i)
- Threat
- R(A)
- Vars
- B(h);CHECK,XS(E)::B(F)+K(C),XB(h)
- B(h);N_PINS(E),XS(D)::S(E),XP(f)
- P(g);XP(B)::B(F)+K(C)
- R(b);SBLOCK::B(F)+K(C)
- P(e);SBLOCK::S(D)
- P(g);::B(F)+K(C)
- Refutation
- P(c);
- Try
- Q(H);CHECK
- Refutation
- K(d);P-FLIGHT,XQ(H)
- Try
- Q(H);
- Threat
- DUALS(3)
- Vars
- B(h);CHECK,XS(E)::B(F)+K(C),XB(h)
- Refutation
- R(i);CHECK
- Try
- Q(H);CHECK,N_SPINS(E),XB(h)
- Vars
- R(i);XQ(H)::R(A)
- Refutation
- K(d);P-FLIGHT
- Try
- P(B);XP(g)
- Threat
- B(F)+K(C)
- Vars
- B(h);CHECK,XS(E)::B(F)+K(C),XB(h)
- R(i);N_GUARD,XQ(H)::R(A)
- B(h);N_PINS(E),XS(D)::S(E),XP(f)
- P(e);SBLOCK::S(D)
- Refutation
- R(i);
- Try
- Actual
- Q(H);
- Threat
- QAR(H)
- Vars
- B(h);CHECK,XS(E)::B(F)+K(C),XB(h)
- B(h);N_PINS(E),XS(D)::S(E),XP(f)
- R(b);SBLOCK::B(F)+K(C)
- P(e);SBLOCK::S(D)
- R(i);N_GUARD::R(A),XR(i)
- R(i);N_GUARD,P_PINQ(H)::R(A)
- P(g);::B(F)+K(C)
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).