MESON Chess Problem Database
Problem Display
PID: 91863 (4B1r1/3p1Nkr/3Q2N1/5pKp/8/2q1p3/1Bp3R1/b7 w - - 0 1)
Dyachuk, Vasyl Vasilovich
Schach, 2003
#2
7 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qd4
- 2.Qxd4#
- 1...Qe5
- 2.Qxe5#
- 1...Qf6+
- 2.Qxf6#
- 1...Rf8
- 2.Qxf8#
- 1...Qd4
- Tries
- 1.Kf4?
- threat
- 2.Sh4#
- 2.Sge5#
- 2.Sf8#
- 2.Sgh8#
- 1...Qd4+
- 2.Qxd4#
- 1...Qe5+
- 2.Sgxe5#
- 2.Qxe5#
- 1...Rxe8
- 2.Sge5#
- 2.Sgh8#
- 1...Rhh8
- 2.Sf8#
- 1...Rf8
- 2.Sh4#
- 2.Sge5#
- 2.Se7#
- 2.Sxf8#
- 2.Sgh8#
- 1...Rgh8
- 2.Sh4#
- 2.Sge5#
- 2.Sf8#
- 2.Sgxh8#
- 1...Qf6
- 2.Sh4#
- 2.Sf8#
- 2.Sgh8#
- 2.Qxf6#
- 1...e2
- 2.Sh4#
- 2.Sf8#
- 2.Sgh8#
- 1...h4
- 2.Sxh4#
- 2.Sge5#
- 2.Sf8#
- 2.Sgh8#
- 1...Rh6!
- threat
- 1.Kh4?
- threat
- 2.Sf4#
- 2.Sge5#
- 2.Sf8#
- 2.Sgh8#
- 1...Qd4+
- 2.Sf4#
- 2.Qxd4#
- 1...Qf6+
- 2.Qxf6#
- 1...Rxe8
- 2.Sge5#
- 2.Sgh8#
- 1...Rhh8
- 2.Sf8#
- 1...Rf8
- 2.Sf4#
- 2.Sge5#
- 2.Se7#
- 2.Sxf8#
- 2.Sgh8#
- 1...Rgh8
- 2.Sf4#
- 2.Sge5#
- 2.Sf8#
- 2.Sgxh8#
- 1...Qe5
- 2.Sf4#
- 2.Sgxe5#
- 2.Sf8#
- 2.Sgh8#
- 2.Qxe5#
- 1...e2
- 2.Sf4#
- 2.Sf8#
- 2.Sgh8#
- 1...f4
- 2.Sxf4#
- 2.Sge5#
- 2.Sf8#
- 2.Sgh8#
- 1...Rh6!
- threat
- 1.Kxf5?
- threat
- 2.Sf4#
- 2.Sh4#
- 2.Sge5#
- 2.Sf8#
- 2.Sgh8#
- 1...Qe5+
- 2.Sgxe5#
- 2.Qxe5#
- 1...Qf6+
- 2.Qxf6#
- 1...Rxe8
- 2.Sge5#
- 2.Sgh8#
- 1...Rhh8
- 2.Sf8#
- 1...Rf8
- 2.Sf4#
- 2.Sh4#
- 2.Se5#
- 2.Se7#
- 2.Sxf8#
- 2.Sh8#
- 2.Qxf8#
- 1...Rgh8
- 2.Sf4#
- 2.Sh4#
- 2.Sge5#
- 2.Sf8#
- 2.Sgxh8#
- 1...Qd4
- 2.Sf4#
- 2.Sh4#
- 2.Sf8#
- 2.Sgh8#
- 2.Qxd4#
- 1...e2
- 2.Sf4#
- 2.Sh4#
- 2.Sf8#
- 2.Sgh8#
- 1...h4
- 2.Sf4#
- 2.Sxh4#
- 2.Sge5#
- 2.Sf8#
- 2.Sgh8#
- 1...Rh6!
- threat
- 1.Sgh8?
- threat
- 2.Kf4#
- 2.Kh4#
- 2.Kxf5#
- 1...Qf6+
- 2.Kf4#
- 1...Rh6
- 2.Qxh6#
- 1...Qd4
- 2.Kxf5#
- 1...Qe5
- 2.Kh4#
- 1...f4
- 2.Kxf4#
- 2.Kh4#
- 2.Kf5#
- 1...h4
- 2.Kf4#
- 2.Kxf5#
- 1...Rhxh8!
- threat
- 1.Sh6?
- threat
- 2.Sxf5#
- 2.Qe7#
- 2.Qxd7#
- 1...Qf6+
- 2.Qxf6#
- 1...Rxh6
- 2.Qe7#
- 2.Qxd7#
- 1...Rhh8
- 2.Qe7#
- 2.Qxd7#
- 1...Rf8
- 2.Qxf8#
- 1...Rgh8
- 2.Qe7#
- 2.Qxd7#
- 1...f4
- 2.Sf5#
- 2.Qe7#
- 2.Qxd7#
- 1...Rxe8!
- threat
- 1.Qe7?
- threat
- 2.Sfe5#
- 2.Sd6#
- 2.Sh6#
- 2.Sd8#
- 2.Sfh8#
- 1...Qf6+
- 2.Qxf6#
- 1...Rh6
- 2.Sfe5#
- 2.Sd6#
- 2.Sxh6#
- 2.Sd8#
- 2.Sfh8#
- 1...Rhh8
- 2.Sfe5#
- 2.Sd6#
- 2.Sh6#
- 2.Sd8#
- 2.Sfxh8#
- 1...Rf8
- 2.Qxf8#
- 1...Rgh8
- 2.Sh6#
- 1...Qe5
- 2.Sfxe5#
- 2.Sd6#
- 2.Sh6#
- 2.Sd8#
- 2.Sfh8#
- 2.Qxe5#
- 1...d6
- 2.Sfe5#
- 2.Sxd6#
- 2.Sh6#
- 2.Sd8#
- 2.Sfh8#
- 1...Rxe8!
- threat
- 1.Kf4?
- Keys
- 1.Sf8!
- threat
- 2.Kf4#
- 2.Kh4#
- 2.Kxf5#
- 1...Qf6+
- 2.Kf4#
- 1...Qd4
- 2.Kxf5#
- 1...Qe5
- 2.Kh4#
- 1...Rh6
- 2.Qxh6#
- 1...f4
- 2.Kxf4#
- 2.Kh4#
- 2.Kf5#
- 1...h4
- 2.Kf4#
- 2.Kxf5#
- threat
- 1.Sf8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- Q(c);N_GUARD::QAB(D),XQ(c)
- Q(c);CHECK,N_GUARD::QAB1(D),XQ(c)
- R(j);N_GUARD::QAB1(D),XR(j)
- Tries
- Try
- K(C);S_FLIGHT
- Threat
- DUALS(4)
- Vars
- Q(c);CHECK,N_GUARD::QAB(D),XQ(c)
- R(i);::R(B)+S(E)
- Refutation
- R(i);
- Try
- K(C);S_FLIGHT
- Threat
- DUALS(4)
- Vars
- Q(c);CHECK,N_GUARD::QAB1(D),XQ(c)
- R(i);::R(B)+S(E)
- Refutation
- R(i);
- Try
- K(C);P-FLIGHT,XP(e)
- Threat
- DUALS(5)
- Vars
- Q(c);CHECK,N_GUARD::QAB1(D),XQ(c)
- R(i);::R(B)+S(E)
- Refutation
- R(i);
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- Q(c);CHECK::R(B)+K(C)
- R(i);N_GUARD::QAB1(D),XR(i)
- Q(c);::R(B)+K(C),XP(e)
- Q(c);::R(B)+K(C)
- Refutation
- R(i);XS(E)
- Try
- S(F);
- Threat
- DUALS(3)
- Vars
- Q(c);CHECK,N_GUARD::QAB1(D),XQ(c)
- R(j);N_GUARD::QAB1(D),XR(j)
- Refutation
- R(j);XB(G)
- Try
- Q(D);
- Threat
- DUALS(5)
- Vars
- Q(c);CHECK,N_GUARD::QAB1(D),XQ(c)
- R(j);N_GUARD::QAB1(D),XR(j)
- R(j);::QAR(D)+S(F)
- Refutation
- R(j);XB(G)
- Try
- Actual
- S(E);
- Threat
- DUALS(3)
- Vars
- Q(c);CHECK::R(B)+K(C)
- Q(c);::R(B)+K(C),XP(e)
- Q(c);::R(B)+K(C)
- R(i);N_GUARD::QAB1(D),XR(i)
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).