MESON Chess Problem Database
Problem Display
PID: 176501 (B5q1/1NBpPRn1/3N3r/1P1k3p/1P3Q2/1P3PnK/7b/2r5 w - - 0 1)
Tura, Waldemar
4th Prize, Schach-Echo, 1976
#2
12 + 9
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qxf7
- 2.Sc5#
- 1...Qh7
- 2.Sc5#
- 1...Rb1
- 2.Sd8#
- 1...Rd1
- 2.Sd8#
- 1...Re1
- 2.Sd8#
- 1...Rf1
- 2.Sd8#
- 1...Rg1
- 2.Sd8#
- 1...Rh1
- 2.Sd8#
- 1...Rxd6
- 2.Qxd6#
- 1...Sf1
- 2.Qe4#
- 1...Sh1
- 2.Qe4#
- 1...Se2
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...S3f5
- 2.Qe4#
- 1...Se8
- 2.Sc5#
- 1...Qxf7
- Tries
- 1.Sc4?
- threat
- 2.Qe5#
- 1...Ke6
- 2.Sc5#
- 1...Se4
- 2.Qxe4#
- 1...Re6
- 2.Qd2#
- 1...Sf1
- 2.Qe4#
- 1...Sh1
- 2.Qe4#
- 1...Se2
- 2.Qe4#
- 1...S3f5
- 2.Qe4#
- 1...d6
- 2.Sd8#
- 1...Re1!
- threat
- 1.Rf5+?
- 1...Ke6
- 2.Re5#
- 2.Qe5#
- 1...S3xf5
- 2.Qe4#
- 1...S7xf5!
- 1...Ke6
- 1.Qc4+?
- 1...Ke5
- 2.f4#
- 1...Rxc4!
- 1...Ke5
- 1.e8Q?
- threat
- 2.Sc5#
- 2.Qd2#
- 2.Qfe5#
- 2.Qee5#
- 1...Rxc7
- 2.Qd2#
- 2.Qfe5#
- 2.Qee5#
- 1...Rxd6
- 2.Qd2#
- 2.Qfe5#
- 2.Qxd6#
- 2.Qee5#
- 1...Sxe8
- 2.Sc5#
- 1...Se4
- 2.Qfxe4#
- 2.Qexe4#
- 2.Qee5#
- 1...Qh7
- 2.Sc5#
- 2.Qfe5#
- 2.Qee5#
- 1...Ra1
- 2.Sa5#
- 2.Qd2#
- 2.Qfe5#
- 2.Qc4#
- 2.Qee5#
- 1...Rd1
- 2.Sa5#
- 2.Sc5#
- 2.Sd8#
- 2.Qfe5#
- 2.Qc4#
- 2.Qee5#
- 1...Re1
- 2.Sa5#
- 2.Sc5#
- 2.Sd8#
- 2.Qd2#
- 2.Qc4#
- 1...Rc2
- 2.Sc5#
- 2.Qfe5#
- 2.Qee5#
- 1...Rc3
- 2.Sc5#
- 2.Qfe5#
- 2.Qee5#
- 1...Rc4
- 2.Sc5#
- 2.Qfe5#
- 2.Qxc4#
- 2.Qee5#
- 2.bxc4#
- 1...Rc5
- 2.Sxc5#
- 2.Qd2#
- 2.Qfe5#
- 2.Qee5#
- 1...Rc6
- 2.Qd2#
- 2.Qfe5#
- 2.Qee5#
- 1...Re6
- 2.Sc5#
- 1...Bg1
- 2.Sc5#
- 2.Qfe5#
- 2.Qee5#
- 1...Sf1
- 2.Sc5#
- 2.Qfe4#
- 2.Qee4#
- 2.Qee5#
- 1...Sh1
- 2.Sc5#
- 2.Qd2#
- 2.Qfe4#
- 2.Qee4#
- 2.Qee5#
- 1...Se2
- 2.Sc5#
- 2.Qfe4#
- 2.Qee4#
- 2.Qee5#
- 1...S3f5
- 2.Sc5#
- 2.Qfe4#
- 2.Qee4#
- 2.Qee5#
- 1...S7f5
- 2.Sc5#
- 2.Qfe5#
- 2.Qee5#
- 1...Se6
- 2.Sc5#
- 1...Qxe8!
- threat
- 1.e8R?
- threat
- 2.Sc5#
- 2.Re5#
- 2.Qd2#
- 2.Qe5#
- 1...Rxc7
- 2.Re5#
- 2.Qd2#
- 2.Qe5#
- 1...Rxd6
- 2.Re5#
- 2.Qd2#
- 2.Qe5#
- 2.Qxd6#
- 1...Sxe8
- 2.Sc5#
- 1...Se4
- 2.Qxe4#
- 1...Qh7
- 2.Sc5#
- 2.Re5#
- 2.Qe5#
- 1...Ra1
- 2.Sa5#
- 2.Re5#
- 2.Qd2#
- 2.Qe5#
- 2.Qc4#
- 1...Rd1
- 2.Sa5#
- 2.Sc5#
- 2.Sd8#
- 2.Re5#
- 2.Qe5#
- 2.Qc4#
- 1...Re1
- 2.Sa5#
- 2.Sc5#
- 2.Sd8#
- 2.Qd2#
- 2.Qc4#
- 1...Rc2
- 2.Sc5#
- 2.Re5#
- 2.Qe5#
- 1...Rc3
- 2.Sc5#
- 2.Re5#
- 2.Qe5#
- 1...Rc4
- 2.Sc5#
- 2.Re5#
- 2.Qe5#
- 2.Qxc4#
- 2.bxc4#
- 1...Rc5
- 2.Sxc5#
- 2.Re5#
- 2.Qd2#
- 2.Qe5#
- 1...Rc6
- 2.Re5#
- 2.Qd2#
- 2.Qe5#
- 1...Re6
- 2.Sc5#
- 1...Bg1
- 2.Sc5#
- 2.Re5#
- 2.Qe5#
- 1...Sf1
- 2.Sc5#
- 2.Re5#
- 2.Qe4#
- 1...Sh1
- 2.Sc5#
- 2.Re5#
- 2.Qd2#
- 2.Qe4#
- 1...Se2
- 2.Sc5#
- 2.Re5#
- 2.Qe4#
- 1...S3f5
- 2.Sc5#
- 2.Re5#
- 2.Qe4#
- 1...S7f5
- 2.Sc5#
- 2.Re5#
- 2.Qe5#
- 1...Se6
- 2.Sc5#
- 1...Qxe8!
- threat
- 1.Sc4?
- Keys
- 1.Se8!
- threat
- 2.Qe5#
- 1...Ke6
- 2.Sd8#
- 1...Rxc7
- 2.Sxc7#
- 1...Se4
- 2.Qxe4#
- 1...Re1
- 2.Qc4#
- 1...Rd6
- 2.Qxd6#
- 1...Re6
- 2.Qd2#
- 1...Sf1
- 2.Qe4#
- 1...Sh1
- 2.Qe4#
- 1...Se2
- 2.Qe4#
- 1...S3f5
- 2.Qe4#
- 1...d6
- 2.Sc5#
- threat
- 1.Se8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 8
- Sets
- Q(i);N_GUARD,XR(K)::B(L)+S(H)
- Q(i);N_GUARD::B(L)+S(H)
- R(a);N_GUARD::B(L)+S(H)
- R(f);OGATE,XS(G)::QAR1(E),XR(f)
- S(c);N_GUARD::QAB1(E)
- S(c);N_GUARD::QAB1(E),XS(c)
- S(h);S_CUTQ(i)::B(L)+S(H)
- Tries
- Try
- S(G);
- Threat
- QAR1(E)
- Vars
- K(d);S_FLIGHT::S(H)
- S(c);N_GUARD::QAB1(E),XS(c)
- R(f);SBLOCK::QAR(E)
- S(c);N_GUARD::QAB1(E)
- P(g);S_CUTR(f)::B(L)+S(H)
- Refutation
- R(a);
- Try
- R(K);CHECK
- Vars
- S(c);XR(K)::QAB1(E)
- Refutation
- S(h);XR(K)
- Try
- Q(E);CHECK
- Vars
- K(d);P-FLIGHT::P(B)
- Refutation
- R(a);XQ(E)
- Try
- P(J);
- Threat
- DUALS(4)
- Vars
- S(h);XQ(J)::B(L)+S(H)
- R(f);::B(L)+S(H)
- S(h);::B(L)+S(H)
- Refutation
- Q(i);XQ(J)
- Try
- P(J);
- Threat
- DUALS(4)
- Vars
- S(h);XR(J)::B(L)+S(H)
- S(c);N_GUARD::QAB1(E),XS(c)
- R(f);::B(L)+S(H)
- S(h);::B(L)+S(H)
- Refutation
- Q(i);XR(J)
- Try
- Actual
- S(G);
- Threat
- QAR1(E)
- Vars
- K(d);S_FLIGHT::S(H)
- R(a);XB(I)::S(G),XR(a)
- S(c);N_GUARD::QAB1(E),XS(c)
- R(a);N_GUARD::QAB1(E)
- R(f);N_GUARD::QAR1(E),XR(f)
- R(f);SBLOCK::QAR(E)
- S(c);N_GUARD::QAB1(E)
- P(g);S_CUTR(f)::B(L)+S(H)
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).