MESON Chess Problem Database
Problem Display
PID: 174096 (K1n1b3/2B2p2/1P2R3/2k4r/5P2/PR2P3/4QNB1/2r5 w - - 0 1)
Faria, Oswaldo
3rd HM., Berlingozzo-Coutinho Festival, 1985
#2
11 + 6
| 1077 | Boletim da UBP | 1986 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Rc3#
- 2.Qc2#
- 1...Rb1
- 2.Rc3#
- 2.Qc2#
- 1...Rd1
- 2.Rc3#
- 2.Qc2#
- 1...Re1
- 2.Rc3#
- 2.Qc2#
- 1...Rf1
- 2.Rc3#
- 2.Qc2#
- 1...Rg1
- 2.Rc3#
- 2.Qc2#
- 1...Rch1
- 2.Rc3#
- 2.Qc2#
- 1...Rc2
- 2.Qxc2#
- 1...Rc3
- 2.Rxc3#
- 1...Rc4
- 2.Sd3#
- 1...Rhh1
- 2.Re5#
- 1...Rh2
- 2.Re5#
- 1...Rh3
- 2.Re5#
- 1...Rh4
- 2.Re5#
- 1...Rd5
- 2.Se4#
- 1...Re5
- 2.Rxe5#
- 1...Rh6
- 2.Re5#
- 1...Rh7
- 2.Re5#
- 1...Rh8
- 2.Re5#
- 1...Bb5
- 2.Rxb5#
- 2.Qxb5#
- 1...Bc6+
- 2.Rxc6#
- 1...Sxb6+
- 2.Bxb6#
- 1...Sd6
- 2.Bxd6#
- 1...Sa7
- 2.Bd6#
- 1...Se7
- 2.Bd6#
- 1...f5
- 2.Re5#
- 1...Ra1
- Tries
- 1.Bb7?
- threat
- 2.Se4#
- 1...Sxb6+
- 2.Bxb6#
- 1...Rc4
- 2.Sd3#
- 1...Re5
- 2.Rxe5#
- 1...Sd6
- 2.Bxd6#
- 1...f5
- 2.Re5#
- 1...Bc6!
- threat
- 1.Rb4?
- threat
- 2.Sd3#
- 1...Bc6+
- 2.Rxc6#
- 1...Sxb6+
- 2.Bxb6#
- 1...Rd1
- 2.Qc4#
- 2.Qc2#
- 1...Rd5
- 2.Se4#
- 1...Bb5
- 2.Rxb5#
- 2.Qxb5#
- 1...Rc3!
- threat
- 1.Qd3?
- threat
- 2.Se4#
- 2.Qd4#
- 1...Bc6+
- 2.Rxc6#
- 1...Sxb6+
- 2.Bxb6#
- 1...fxe6
- 2.Qd4#
- 1...Rd1
- 2.Se4#
- 2.Rc3#
- 2.Qc2#
- 2.Qc3#
- 1...Rd5
- 2.Se4#
- 2.Qxd5#
- 1...Re5
- 2.Rxe5#
- 2.Qd4#
- 1...Sd6
- 2.Bxd6#
- 2.Qd4#
- 1...f5
- 2.Re5#
- 2.Qd4#
- 2.Qd5#
- 1...Rc4!
- threat
- 1.Qc4+?
- 1...Rxc4
- 2.Sd3#
- 1...Kxc4!
- 1...Rxc4
- 1.Qxh5+?
- 1...Kc4
- 2.Qd5#
- 1...f5!
- 1...Kc4
- 1.Qd2?
- threat
- 2.Qxc1#
- 2.Qb4#
- 2.Qd4#
- 1...Bc6+
- 2.Rxc6#
- 1...Kc4
- 2.Qb4#
- 1...Ra1
- 2.Qc3#
- 2.Qb4#
- 2.Qc2#
- 2.Qd4#
- 1...Rb1
- 2.Qc3#
- 2.Qb4#
- 2.Qc2#
- 2.Qd4#
- 1...Rd1
- 2.Qc3#
- 2.Qb4#
- 2.Qc2#
- 1...Re1
- 2.Qc3#
- 2.Qb4#
- 2.Qc2#
- 2.Qd4#
- 1...Rf1
- 2.Qc3#
- 2.Qb4#
- 2.Qc2#
- 2.Qd4#
- 1...Rg1
- 2.Qc3#
- 2.Qb4#
- 2.Qc2#
- 2.Qd4#
- 1...Rch1
- 2.Qc3#
- 2.Qb4#
- 2.Qc2#
- 2.Qd4#
- 1...Rc2
- 2.Qb4#
- 2.Qxc2#
- 2.Qd4#
- 1...Rc3
- 2.Qxc3#
- 2.Qd4#
- 1...Rc4
- 2.Sd3#
- 1...Rhh1
- 2.Qb4#
- 2.Qd4#
- 2.Qd5#
- 1...Rd5
- 2.Qxc1#
- 2.Qb4#
- 2.Qxd5#
- 1...Bb5
- 2.Qb4#
- 2.Qd4#
- 1...Sd6
- 2.Qb4#
- 2.Qd4#
- 1...Sxb6+!
- threat
- 1.Bb7?
- Keys
- 1.Qa6!
- threat
- 2.Sd3#
- 1...Bc6+
- 2.Rxc6#
- 1...Sxb6+
- 2.Bxb6#
- 1...Bb5
- 2.Qxb5#
- 1...Rd1
- 2.Rc3#
- 1...Rc3
- 2.Rxc3#
- 1...Rd5
- 2.Se4#
- threat
- 1.Qa6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 14
- Sets
- R(a);N_GUARD::QAR(A),XR(a)
- R(a);N_GUARD::R(E),XR(a)
- R(a);SBLOCK::S(B)
- R(c);N_GUARD::R(I)
- R(c);SBLOCK::S(B)
- R(c);N_GUARD::R(I),XR(c)
- B(f);CHECK,N_GUARD::R1(I),XB(f)
- S(e);CHECK,OGATE,XP(H)::B(J),XS(e)
- S(e);N_GUARD::B(J),XS(e)
- S(e);N_GUARD::B(J)
- P(d);S_CUTR(c)::R(I)
- Tries
- Try
- B(C);
- Threat
- S(B)
- Vars
- S(e);CHECK,OGATE,XP(H)::B(J),XS(e)
- R(a);SBLOCK::S(B)
- R(c);N_GUARD::R(I),XR(c)
- S(e);N_GUARD::B(J),XS(e)
- P(d);S_CUTR(c)::R(I)
- Refutation
- B(f);P_PINB(C)
- Try
- R(E);
- Threat
- S(B)
- Vars
- B(f);CHECK,N_GUARD::R1(I),XB(f)
- S(e);CHECK,OGATE,XP(H)::B(J),XS(e)
- R(c);SBLOCK::S(B)
- Refutation
- R(a);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- B(f);CHECK,N_GUARD::R1(I),XB(f)
- S(e);CHECK,OGATE,XP(H)::B(J),XS(e)
- P(d);XR(I)::QAB1(A)
- Refutation
- R(a);
- Try
- Q(A);CHECK
- Vars
- R(a);SBLOCK,XQ(A)::S(B)
- Refutation
- K(b);P-FLIGHT,XQ(A)
- Try
- Q(A);CHECK,XR(c)
- Vars
- K(b);P-FLIGHT::QAB1(A)
- Refutation
- P(d);P_SPINP(d)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- B(f);CHECK,N_GUARD::R1(I),XB(f)
- K(b);P-FLIGHT::QAR1(A)
- R(a);SBLOCK::S(B)
- Refutation
- S(e);CHECK,XP(H)
- Try
- Actual
- Q(A);
- Threat
- S(B)
- Vars
- B(f);CHECK,N_GUARD::R1(I),XB(f)
- S(e);CHECK,OGATE,XP(H)::B(J),XS(e)
- B(f);N_GUARD::QAR1(A),XB(f)
- R(a);N_GUARD::R(E)
- R(a);N_GUARD::R(E),XR(a)
- R(c);SBLOCK::S(B)
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).