MESON Chess Problem Database
Problem Display
PID: 150972 (7b/1N3BB1/1q3pp1/1r2kpQ1/1p6/4p1N1/4K3/3R4 w - - 0 1)
Alaikov, Venelin
Petite JT, 1991
#2
7 + 9
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Qa5
- 2.Qxe3#
- 1...Qc7
- 2.Qxe3#
- 1...Qd8
- 2.Qxe3#
- 1...Qa6
- 2.Qxe3#
- 1...Qd6
- 2.Qxe3#
- 1...Qe6
- 2.Qxe3#
- 1...Rc5
- 2.Qxe3#
- 1...Rd5
- 2.Rxd5#
- 1...Qa5
- Tries
- 1.Bxf6+?
- 1...Qxf6
- 2.Qxe3#
- 1...Bxf6!
- 1...Qxf6
- 1.Rf1?
- threat
- 2.Qf4#
- 1...Kd4
- 2.Qxe3#
- 1...Qd4
- 2.Qxf6#
- 1...Qe6!
- threat
- 1.Rd4?
- threat
- 2.Re4#
- 2.Qxe3#
- 2.Qf4#
- 1...Kxd4
- 2.Qxe3#
- 1...Qxb7
- 2.Qf4#
- 2.Qxf6#
- 1...Qc6
- 2.Qf4#
- 1...Qe6
- 2.Qxe3#
- 2.Qf4#
- 1...Qxd4!
- threat
- 1.Qxf6+?
- 1...Kf4
- 2.Qh4#
- 1...Qxf6!
- 1...Kf4
- 1.Bxf6+?
- Keys
- 1.Bxg6!
- threat
- 2.Qxf5#
- 1...Ke6
- 2.Qxf6#
- 1...Qe6
- 2.Qxe3#
- threat
- 1.Bxg6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- Q(f);N_GUARD::QAR2(D),XP(a)
- R(c);S_CUTQ(f)::QAR2(D),XP(a)
- R(c);N_GUARD::R1(A),XR(c)
- Tries
- Try
- B(G);CHECK,XP(g)
- Vars
- Q(f);SBLOCK,XB(G)::QAR2(D),XP(a)
- Refutation
- B(i);XB(G)
- Try
- R(A);
- Threat
- QAB1(D)
- Vars
- K(d);N_SPINP(e),P_SPINP(g),S_FLIGHT::QAB1(D),XP(a)
- Q(f);N_GUARD,SBLOCK::QAB1(D),XP(g)
- Refutation
- Q(f);
- Try
- R(A);
- Threat
- DUALS(3)
- Vars
- K(d);N_SPINP(e),P_SPINP(g),S_FLIGHT,XR(A)::QAB1(D),XP(a)
- Q(f);::QAB1(D)
- Refutation
- Q(f);XR(A)
- Try
- Q(D);CHECK,N_PINP(e),XP(g)
- Vars
- K(d);P_SPINP(e),S_FLIGHT::QAR2(D)
- Refutation
- Q(f);P_SPINQ(f),XQ(D)
- Try
- Actual
- B(F);XP(h)
- Threat
- QAR1(D),XP(e)
- Vars
- K(d);N_SPINP(e),P-FLIGHT::QAR1(D),XP(g)
- Q(f);N_GUARD,SBLOCK::QAR2(D),XP(a)
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).