MESON Chess Problem Database
Problem Display
PID: 71020 (3R2b1/B7/2pb2N1/2qN1Q1K/1nrk4/2np4/3P4/1B6 w - - 0 1)
Lebedkin, Elisey K
1st Prize, Raketa, 1989
#2
8 + 9
| 5454 | Near Snap | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Be5
- 2.Qxe5#
- 1...Be7
- 2.Qe5#
- 1...Bf8
- 2.Qe5#
- 1...Sa2
- 2.Qxd3#
- 1...Sxd5
- 2.Qxd3#
- 1...Sa6
- 2.Qxd3#
- 1...Be5
- Tries
- 1.Sxc3?
- threat
- 2.Qe5#
- 1...Bd5
- 2.Qf2#
- 1...Sd5
- 2.Qxd3#
- 2.Qe4#
- 1...Rxc3!
- threat
- 1.Sxb4?
- threat
- 2.Sxc6#
- 2.Qe5#
- 1...Qxa7
- 2.Qe5#
- 1...Qb6
- 2.Qe5#
- 1...Bd5
- 2.Qxd3#
- 1...Sd5
- 2.Sxc6#
- 2.Qxd3#
- 1...Rxb4!
- threat
- 1.Qf6+?
- 1...Kxd5
- 2.Qe5#
- 1...Be5
- 2.Qxe5#
- 1...Ke4!
- 1...Kxd5
- 1.Sxc3?
- Keys
- 1.Sf6!
- threat
- 2.Qe5#
- 1...Bd5
- 2.Qf2#
- 1...Scd5
- 2.Qe4#
- 1...Sbd5
- 2.Qxd3#
- threat
- 1.Sf6!
Anticipated by 58070(1958)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- B(h);N_GUARD::QAB1(D),XB(h)
- B(h);N_GUARD::QAB1(D)
- S(c);N_GUARD::QAR1(D),XP(b)
- S(c);N_GUARD,SBLOCK,XS(C)::QAR1(D),XP(b)
- Tries
- Try
- S(C);P_PINB(h),P_SPINQ(D),XS(a)
- Threat
- QAB1(D)
- Vars
- B(i);N_PINQ(D),N_SPINB(h)::QAB(D)
- Refutation
- R(d);XS(C)
- Try
- S(C);P_PINB(h),P_SPINQ(D),XS(c)
- Threat
- DUALS(2)
- Vars
- Q(f);N_PINQ(D),N_SPINQ(f),XB(G)::QAB1(D)
- Q(f);N_PINQ(D)::QAB1(D)
- B(i);N_PINQ(D),N_SPINB(h)::QAR1(D),XP(b)
- Refutation
- R(d);XS(C)
- Try
- Q(D);CHECK,P_SPINS(C)
- Vars
- K(e);N_SPINQ(f),P-FLIGHT,P_SPINB(h),XS(C)::QAR1(D)
- B(h);N_GUARD,N_PINS(C),P_SPINB(h)::QAB1(D),XB(h)
- Refutation
- K(e);N_SPINQ(f),P-FLIGHT,P_SPINP(b)
- Try
- Actual
- S(C);P_PINB(h),P_SPINQ(D)
- Threat
- QAB1(D)
- Vars
- B(i);N_PINQ(D),N_SPINB(h)::QAB(D)
- S(a);N_PINQ(D),N_SPINB(h)::QAR1(D)
- S(c);N_PINQ(D),N_SPINB(h)::QAR1(D),XP(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).