MESON Chess Problem Database
Problem Display
PID: 120871 (4R3/2R3N1/4N2p/1pP5/2r1k2K/3nP1B1/B1P3P1/4Q3 w - - 0 1)
Shedey, Sergey Oleksandrovich
Socialisticna Chark, 1963
#2
12 + 5
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Kd5+
- 2.e4#
- 1...Rxc2
- 2.Sg5#
- 1...Rc3
- 2.Sg5#
- 1...Ra4
- 2.Sg5#
- 1...Rb4
- 2.Sg5#
- 1...Rd4
- 2.Sg5#
- 1...Rxc5
- 2.Sxc5#
- 2.Sg5#
- 1...Sc1
- 2.Sf4#
- 1...Sxe1
- 2.Sf4#
- 1...Sb2
- 2.Sf4#
- 1...Sf2
- 2.Sf4#
- 1...Sb4
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Kd5+
- Tries
- 1.Sd4+?
- 1...Se5
- 2.Rxe5#
- 1...Kd5!
- 1...Se5
- 1.Sd8+?
- 1...Se5
- 2.Rxe5#
- 1...Kd5+!
- 1...Se5
- 1.Sf8+?
- 1...Se5
- 2.Rxe5#
- 1...Kd5+!
- 1...Se5
- 1.Rd7?
- threat
- 2.Sg5#
- 2.cxd3#
- 1...Rxc2
- 2.Sg5#
- 2.Bd5#
- 2.Rd4#
- 1...Sxe1
- 2.Sd4#
- 2.Sf4#
- 2.Sg5#
- 2.Sc7#
- 2.Sd8#
- 2.Sf8#
- 1...Sxc5
- 2.Sxc5#
- 2.Sg5#
- 1...Sf4
- 2.Sxf4#
- 2.Sg5#
- 2.exf4#
- 1...Rc3
- 2.Sg5#
- 2.Bd5#
- 2.Rd4#
- 1...Rd4
- 2.Sg5#
- 2.Rxd4#
- 1...Sc1
- 2.Sd4#
- 2.Sf4#
- 2.Sg5#
- 2.Sc7#
- 2.Sd8#
- 2.Sf8#
- 1...Sb2
- 2.Sd4#
- 2.Sf4#
- 2.Sg5#
- 2.Sc7#
- 2.Sd8#
- 2.Sf8#
- 1...Sf2
- 2.Sd4#
- 2.Sf4#
- 2.Sg5#
- 2.Sc7#
- 2.Sd8#
- 2.Sf8#
- 1...Sb4
- 2.Sd4#
- 2.Sf4#
- 2.Sg5#
- 2.Sc7#
- 2.Sd8#
- 2.Sf8#
- 1...Se5!
- threat
- 1.Qd2?
- threat
- 2.Qxd3#
- 1...Kd5+
- 2.Sf4#
- 1...Rxc2
- 2.Sg5#
- 1...Sxc5
- 2.Sxc5#
- 2.Sg5#
- 1...Rc3
- 2.Sg5#
- 1...Rd4
- 2.Sg5#
- 1...Sc1
- 2.Sf4#
- 2.Sg5#
- 2.Sd8#
- 2.Sf8#
- 1...Se1
- 2.Sf4#
- 2.Sg5#
- 2.Sd8#
- 2.Sf8#
- 1...Sb2
- 2.Sf4#
- 2.Sg5#
- 2.Sd8#
- 2.Sf8#
- 1...Sf2
- 2.Sf4#
- 2.Sg5#
- 2.Sd8#
- 2.Sf8#
- 1...Sb4
- 2.Sf4#
- 2.Sg5#
- 2.Sd8#
- 2.Sf8#
- 1...Sf4
- 2.Sxf4#
- 2.Sg5#
- 1...Se5!
- threat
- 1.Qe2?
- threat
- 2.Qxd3#
- 2.Qf3#
- 1...Kd5+
- 2.e4#
- 1...Rxc2
- 2.Sg5#
- 2.Qf3#
- 1...Sxc5
- 2.Qf3#
- 1...Sf4
- 2.Sxf4#
- 1...Rc3
- 2.Sg5#
- 2.Qf3#
- 1...Rd4
- 2.Sg5#
- 2.Qf3#
- 2.exd4#
- 1...Sc1
- 2.Sf4#
- 2.Qf3#
- 1...Se1
- 2.Sf4#
- 1...Sb2
- 2.Sf4#
- 2.Qf3#
- 1...Sf2
- 2.Sf4#
- 2.Qf3#
- 1...Sb4
- 2.Sf4#
- 2.Qf3#
- 1...Se5!
- threat
- 1.cxd3+?
- 1...Kd5+
- 2.Sf4#
- 2.e4#
- 1...Kxd3+!
- 1...Kd5+
- 1.Sd4+?
- Keys
- 1.Qc3!
- threat
- 2.Qxd3#
- 1...Kxe3+
- 2.Sd4#
- 1...Kd5+
- 2.Qd4#
- 1...Rxc3
- 2.Sg5#
- 1...Sxc5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Rd4
- 2.Sg5#
- 2.Qxd4#
- 1...Sc1
- 2.Sf4#
- 2.Qe5#
- 1...Se1
- 2.Sf4#
- 2.Qe5#
- 1...Sb2
- 2.Sf4#
- 2.Qe5#
- 1...Sf2
- 2.Sf4#
- 2.Qe5#
- 1...Sb4
- 2.Sf4#
- 2.Qe5#
- 1...Sf4
- 2.Sxf4#
- threat
- 1.Qc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 9
- Sets
- K(c);CHECK,OGATE,P_SPINR(b),S_FLIGHT::P(E)
- R(b);XP(C)::R(L)+S(I),DCHECK
- R(b);::R(L)+S(I),DCHECK
- S(a);N_GUARD::R(L)+S(I)
- S(a);N_GUARD,XQ(A)::R(L)+S(I)
- S(a);N_GUARD::R(L)+S(I),XS(a)
- Tries
- Try
- S(I);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::R1(L),XS(a)
- Refutation
- K(c);P_PINS(I),P_SPINR(b),S_FLIGHT
- Try
- S(I);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::R1(L),XS(a)
- Refutation
- K(c);CHECK,P_SPINR(b),S_FLIGHT
- Try
- S(I);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::R1(L),XS(a)
- Refutation
- K(c);CHECK,P_SPINR(b),S_FLIGHT
- Try
- R(J);
- Threat
- DUALS(2)
- Refutation
- S(a);
- Try
- Q(A);
- Threat
- QAB1(A),XS(a)
- Vars
- K(c);CHECK,P_SPINR(b),P_SPINS(a),S_FLIGHT::S(I)
- R(b);XP(C)::R(L)+S(I),DCHECK
- R(b);::R(L)+S(I),DCHECK
- Refutation
- S(a);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- K(c);CHECK,OGATE,P_SPINR(b),S_FLIGHT::P(E)
- S(a);XP(H)::QAB1(A)
- S(a);N_GUARD::R(L)+S(I),XS(a)
- S(a);N_GUARD::R(L)+S(I)
- Refutation
- S(a);
- Try
- P(C);CHECK,XS(a)
- Refutation
- K(c);CHECK,S_FLIGHT,XP(C)
- Try
- Actual
- Q(A);
- Threat
- QAB1(A),XS(a)
- Vars
- K(c);CHECK,P-FLIGHT,P_SPINS(a),XP(E)::R(L)+S(I)
- K(c);CHECK,P_SPINR(b),S_FLIGHT::QAR1(A)
- R(b);XQ(A)::R(L)+S(I),DCHECK
- S(a);N_GUARD,XP(H)::QAR1(A)
- S(a);N_GUARD::QAR1(A),XS(a)
- S(a);N_GUARD::R(L)+S(I),XS(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).