MESON Chess Problem Database
Problem Display
PID: 244382 (2b1Q3/1pK1B2B/1N5p/6Pr/1N1k2n1/1p2R1P1/1P1pPn2/4R3 w - - 0 1)
Makaronets, Leonid
Schweizerische Schachzeitung, 1992
#2
12 + 9
SOLUTION
- SOUND
- Sets
- 1...Kxe3
- 2.Bc5#
- 1...Sd1
- 2.Re4#
- 1...Sh1
- 2.Re4#
- 1...Sd3
- 2.Re4#
- 1...Sh3
- 2.Re4#
- 1...Se4
- 2.Rxe4#
- 1...Sxe3
- 2.Qh8#
- 1...Kxe3
- Tries
- 1.Sd3?
- threat
- 2.Bc5#
- 1...Kxe3
- 2.Bc5#
- 1...Sxd3
- 2.Re4#
- 1...Se4
- 2.Rxe4#
- 1...Rxg5!
- threat
- 1.Sc6+?
- 1...Kxe3
- 2.Sc4#
- 2.Sd5#
- 2.Bc5#
- 1...bxc6!
- 1...Kxe3
- 1.Bf6+?
- 1...Se5
- 2.Qxe5#
- 1...Sxf6
- 2.Qe5#
- 1...Kc5!
- 1...Se5
- 1.Rd3+?
- 1...Ke5
- 2.Bd6#
- 2.Bf6#
- 1...Sxd3!
- 1...Ke5
- 1.Re5?
- threat
- 2.Bc5#
- 1...Kxe5
- 2.Bf6#
- 1...Sxe5
- 2.e3#
- 1...Se4
- 2.Rxe4#
- 1...Sd3
- 2.Re4#
- 1...Be6!
- threat
- 1.Qb5?
- threat
- 2.Bc5#
- 2.Qc5#
- 1...Kxe3
- 2.Bc5#
- 2.Qc5#
- 1...Sxe3
- 2.Bf6#
- 2.Qc5#
- 1...Sd3
- 2.Rxd3#
- 2.Re4#
- 2.Qxd3#
- 1...Se4
- 2.Rd3#
- 2.Rxe4#
- 1...Rxg5!
- threat
- 1.Qc6?
- threat
- 2.Bc5#
- 2.Qc3#
- 2.Qc5#
- 1...Kxe3
- 2.Bc5#
- 2.Qc5#
- 1...Rxg5
- 2.Qc3#
- 1...Sxe3
- 2.Bf6#
- 2.Qc3#
- 2.Qc5#
- 2.Qf6#
- 1...dxe1Q
- 2.Bc5#
- 2.Qc5#
- 1...dxe1B
- 2.Bc5#
- 2.Qc5#
- 1...Se4
- 2.Rxe4#
- 2.Qxe4#
- 1...d1S
- 2.Bc5#
- 2.Qc5#
- 1...Sd1
- 2.Bc5#
- 2.Re4#
- 2.Qe4#
- 2.Qc5#
- 1...Sd3
- 2.Re4#
- 2.Qe4#
- 1...bxc6!
- threat
- 1.Qd7+?
- 1...Kxe3
- 2.Sc4#
- 2.Bc5#
- 1...Bxd7!
- 1...Kxe3
- 1.Qd8+?
- 1...Kxe3
- 2.Sc4#
- 2.Bc5#
- 1...Bd7!
- 1...Kxe3
- 1.Qf8?
- threat
- 2.Bc5#
- 1...Kxe3
- 2.Bc5#
- 2.Qf4#
- 1...Sxe3
- 2.Bf6#
- 2.Qg7#
- 2.Qf6#
- 2.Qh8#
- 1...Se4
- 2.Rxe4#
- 1...Sd3
- 2.Re4#
- 1...Rxg5!
- threat
- 1.Qh8+?
- 1...Kxe3
- 2.S4d5#
- 2.Sc4#
- 2.S6d5#
- 2.Bc5#
- 1...Se5
- 2.Qxe5#
- 1...Sf6!
- 1...Kxe3
- 1.Sd3?
- Keys
- 1.Qa4!
- threat
- 2.Sc2#
- 2.S4d5#
- 1...Kxe3
- 2.S4d5#
- 2.Bc5#
- 1...Sxe3
- 2.Sc6#
- 1...dxe1Q
- 2.Sc2#
- 1...dxe1B
- 2.Sc2#
- 1...Se4
- 2.Rxe4#
- 1...Bd7
- 2.Sc2#
- 1...Sd3
- 2.Sc2#
- 2.Re4#
- 1...Se5
- 2.Sc2#
- threat
- 1.Qa4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 5
- Sets
- K(d);S_FLIGHT,XR(D)::QAR(L)+B(J),DCHECK
- S(b);N_GUARD::R1(D)
- S(b);N_GUARD::R1(D),XS(b)
- S(e);N_GUARD,SBLOCK,XR(D)::QAB(L)
- Tries
- Try
- S(F);
- Threat
- B(J)
- Vars
- K(d);S_FLIGHT,XR(D)::QAR(L)+B(J),DCHECK
- S(b);N_GUARD,XS(F)::R1(D)
- S(b);N_GUARD::R1(D),XS(b)
- Refutation
- R(f);XP(G)
- Try
- S(F);CHECK
- Refutation
- P(h);XS(F)
- Try
- B(J);CHECK
- Vars
- S(e);N_GUARD,P_SPINS(e)::QAB1(L),XS(e)
- S(e);N_GUARD,XB(J)::QAB1(L)
- Refutation
- K(d);S_FLIGHT
- Try
- R(D);CHECK
- Refutation
- S(b);XR(D)
- Try
- R(D);
- Threat
- B(J)
- Vars
- K(d);OGATEB,S_FLIGHT,XR(D)::QAR(L)+B(J),DCHECK
- S(e);N_GUARD,SBLOCK,XR(D)::P(C)
- S(b);N_GUARD::R1(D),XS(b)
- S(b);N_GUARD::R1(D)
- Refutation
- B(i);
- Try
- Q(L);
- Threat
- DUALS(2)
- Refutation
- R(f);XP(G)
- Try
- Q(L);
- Threat
- DUALS(3)
- Vars
- R(f);XP(G)::QAB1(L)
- Refutation
- P(h);XQ(L)
- Try
- Q(L);CHECK
- Refutation
- B(i);XQ(L)
- Try
- Q(L);CHECK
- Refutation
- B(i);P_SPINB(i)
- Try
- Q(L);
- Threat
- B(J)
- Vars
- S(b);N_GUARD::R1(D),XS(b)
- S(b);N_GUARD::R1(D)
- Refutation
- R(f);XP(G)
- Try
- Q(L);CHECK
- Vars
- S(e);N_GUARD,P_SPINS(e)::QAB1(L),XS(e)
- Refutation
- S(e);P_SPINS(e)
- Try
- Actual
- Q(L);
- Threat
- DUALS(2)
- Vars
- S(e);SBLOCK,XR(D)::QAR(L)+S(F),DCHECK
- P(a);XR(A)::QAR(L)+S(F),DCHECK
- S(b);N_GUARD::R1(D),XS(b)
- B(i);::QAR(L)+S(F),DCHECK
- S(e);::QAR(L)+S(F),DCHECK
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).