MESON Chess Problem Database
Problem Display
PID: 103438 (K2N4/R3pr2/1BPk2NQ/8/p1P2pb1/q1p5/n7/8 w - - 0 1)
Aleksandrov, Vladimir Aleksandrovich
Matou, 1992
#2
8 + 9
| 6490 | yacpdb | 2009 |
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Qc5
- 2.Bc7#
- 1...Rf5
- 2.Rd7#
- 1...Bd1
- 2.Rd7#
- 1...Be2
- 2.Rd7#
- 1...Bf3
- 2.Rd7#
- 1...Bh5
- 2.Rd7#
- 1...Bd7
- 2.Rxd7#
- 1...Qc5
- Tries
- 1.Se5+?
- 1...Rf6
- 2.Sef7#
- 1...Be6
- 2.Sexf7#
- 2.Sdxf7#
- 2.Qxe6#
- 1...e6
- 2.Sexf7#
- 2.Sdxf7#
- 1...Kxe5!
- 1...Rf6
- 1.Sh8+?
- 1...Rf6
- 2.Shf7#
- 1...Be6
- 2.Shxf7#
- 2.Qxe6#
- 1...e6
- 2.Shxf7#
- 1...Ke5!
- 1...Rf6
- 1.Sb7+?
- 1...Kxc6
- 2.Se5#
- 1...Ke6!
- 1...Kxc6
- 1.Sxf7+?
- 1...Kxc6
- 2.Sge5#
- 2.Sxe7#
- 1...Ke6!
- 1...Kxc6
- 1.Qxf4+?
- 1...e5
- 2.Qxe5#
- 1...Rxf4!
- 1...e5
- 1.Qg5?
- threat
- 2.Bc7#
- 2.Qd5#
- 2.Qe5#
- 1...Qc5
- 2.Bxc5#
- 2.Bc7#
- 2.Qxc5#
- 1...Rf5
- 2.Rd7#
- 2.Qxe7#
- 1...Bf3
- 2.Bc7#
- 2.Rd7#
- 2.Qe5#
- 1...Be6
- 2.Bc7#
- 2.Qe5#
- 1...Sb4
- 2.Bc5#
- 2.Bc7#
- 2.Qc5#
- 2.Qe5#
- 2.c5#
- 1...e5
- 2.Qxe5#
- 1...e6
- 2.Qe5#
- 1...Bf5!
- threat
- 1.Qg7?
- threat
- 2.Qd4#
- 2.Qe5#
- 1...Rf6
- 2.Qxe7#
- 1...Qc5
- 2.Bc7#
- 1...Rf5
- 2.Rd7#
- 2.Qxe7#
- 1...Bf3
- 2.Rd7#
- 2.Qe5#
- 1...Be6
- 2.Qe5#
- 1...Sb4
- 2.Qe5#
- 1...e5
- 2.Qxe5#
- 1...Rxg7!
- threat
- 1.Qh5?
- threat
- 2.Bc7#
- 2.Qd5#
- 2.Qe5#
- 1...Bxh5
- 2.Rd7#
- 1...Qc5
- 2.Bxc5#
- 2.Bc7#
- 2.Qxc5#
- 1...Rf5
- 2.Rd7#
- 1...Bf3
- 2.Bc7#
- 2.Rd7#
- 2.Qe5#
- 1...Be6
- 2.Bc7#
- 2.Qe5#
- 1...Sb4
- 2.Bc5#
- 2.Bc7#
- 2.Qc5#
- 2.Qe5#
- 2.c5#
- 1...e5
- 2.Qxe5#
- 1...e6
- 2.Qe5#
- 1...Bf5!
- threat
- 1.Se5+?
- Keys
- 1.Qh1!
- threat
- 2.Qd5#
- 1...Qc5
- 2.Bc7#
- 1...Rf5
- 2.Rd7#
- 1...Bf3
- 2.Rd7#
- 1...Be6
- 2.Sb7#
- 1...Sb4
- 2.c5#
- 1...f3
- 2.Qd1#
- 1...e6
- 2.Sxf7#
- threat
- 1.Qh1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 4
- Sets
- Q(b);SBLOCK::B(B)
- R(i);S_CUTB(f)::R1(F)
- B(f);N_GUARD::R1(F)
- B(f);N_GUARD,P_PINP(C)::R1(F)
- B(f);N_GUARD::R1(F),XB(f)
- Tries
- Try
- S(D);CHECK
- Vars
- R(i);P_SPINR(i)::S(D)
- Refutation
- K(g);S_FLIGHT,XS(D)
- Try
- S(D);CHECK
- Vars
- R(i);P_SPINR(i)::S(D)
- P(h);P_SPINP(h)::S(D),XR(i)
- Refutation
- K(g);S_FLIGHT
- Try
- S(H);CHECK
- Vars
- K(g);P-FLIGHT,XP(C)::QAR(E)+S(D),DCHECK
- Refutation
- K(g);P-FLIGHT
- Try
- S(H);CHECK,XR(i)
- Refutation
- K(g);P-FLIGHT
- Try
- Q(E);CHECK,XP(e)
- Vars
- P(h);P_SPINP(h)::QAB1(E),XP(h)
- Refutation
- R(i);XQ(E)
- Try
- Q(E);
- Threat
- DUALS(3)
- Vars
- P(h);::QAB1(E),XP(h)
- P(h);::QAB1(E)
- Refutation
- B(f);
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- R(i);OGATE::QAB1(E),XP(h)
- Q(b);SBLOCK::B(B)
- B(f);::QAB1(E)
- S(a);::QAB1(E)
- P(h);::QAB1(E),XP(h)
- Refutation
- R(i);XQ(E)
- Try
- Q(E);
- Threat
- DUALS(3)
- Vars
- B(f);N_GUARD,XQ(E)::R1(F)
- R(i);S_CUTB(f)::R1(F)
- P(h);::QAB1(E),XP(h)
- P(h);::QAB1(E)
- Refutation
- B(f);
- Try
- Actual
- Q(E);
- Threat
- QAR1(E)
- Vars
- Q(b);SBLOCK::B(B)
- R(i);S_CUTB(f)::R1(F)
- B(f);N_GUARD,P_PINP(C)::R1(F)
- B(f);SBLOCK::S(H)
- S(a);S_CUTQ(b)::P(A)
- P(e);S_CUTB(f)::QAR(E)
- P(h);SBLOCK::S(H),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).