MESON Chess Problem Database
Problem Display
PID: 179648 (3KR3/2P5/2r2p2/3pNN2/3Pk1P1/3RPpp1/6q1/4Q3 w - - 0 1)
Archakov, Vladimir Mikhailovich
Praca, 1991
#2
10 + 7
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Sxg3#
- 1...Qh1
- 2.Sxg3#
- 1...Qa2
- 2.Sxg3#
- 1...Qb2
- 2.Sxg3#
- 1...Qc2
- 2.Sxg3#
- 1...Qd2
- 2.Sxg3#
- 1...Qe2
- 2.Sxg3#
- 1...Rc1
- 2.Sd6#
- 1...Rc2
- 2.Sd6#
- 1...Rc3
- 2.Sd6#
- 1...Rc4
- 2.Sd6#
- 1...Rc5
- 2.Sd6#
- 1...Rd6+
- 2.Sxd6#
- 1...Rxc7
- 2.Sd6#
- 1...Qf1
- Tries
- 1.Sd7+?
- 1...Re6
- 2.Sc5#
- 1...Kxd3!
- 1...Re6
- 1.Rd2?
- threat
- 2.Sxc6#
- 1...Rd6+
- 2.Sxd6#
- 1...Qxd2
- 2.Sxg3#
- 1...Rxc7
- 2.Sd7#
- 2.Sd6#
- 1...fxe5
- 2.Rxe5#
- 1...Re6
- 2.Qb1#
- 1...Rc1
- 2.Sd3#
- 2.Sc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Sd6#
- 1...Rc2
- 2.Sd3#
- 2.Sc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Sd6#
- 1...Rc3
- 2.Sd3#
- 2.Sc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Sd6#
- 1...Rc4
- 2.Sd3#
- 2.Sxc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Sd6#
- 1...Rc5
- 2.Sd3#
- 2.Sc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Sd6#
- 1...Ra6
- 2.Sc6#
- 2.Qb1#
- 1...Rb6
- 2.Sc6#
- 1...f2!
- threat
- 1.Rc3?
- threat
- 2.Sxc6#
- 1...Rd6+
- 2.Sxd6#
- 1...Rxc3
- 2.Sd6#
- 1...Rxc7
- 2.Sd7#
- 2.Sd6#
- 1...fxe5
- 2.Rxe5#
- 1...Rc4
- 2.Sd3#
- 2.Sxc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Sd6#
- 1...Rc5
- 2.Sd3#
- 2.Sc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Sd6#
- 1...Ra6
- 2.Sc6#
- 1...Rb6
- 2.Sc6#
- 1...f2
- 2.Qb1#
- 1...Re6!
- threat
- 1.Qxg3?
- threat
- 2.Qf4#
- 1...Rd6+
- 2.Sxd6#
- 1...Qxg3
- 2.Sxg3#
- 1...Qh2
- 2.Qxf3#
- 1...fxe5!
- threat
- 1.Qd1?
- threat
- 2.Sxc6#
- 1...Rd6+
- 2.Sxd6#
- 1...Rxc7
- 2.Sd7#
- 2.Sd6#
- 1...fxe5
- 2.Rxe5#
- 1...Qd2
- 2.Sxg3#
- 2.Qxf3#
- 1...Rc1
- 2.Sxf3#
- 2.Sc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Sd6#
- 1...Rc2
- 2.Sxf3#
- 2.Sc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Sd6#
- 1...Rc3
- 2.Sxf3#
- 2.Sc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Sd6#
- 1...Rc4
- 2.Sxf3#
- 2.Sxc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Sd6#
- 1...Rc5
- 2.Sxf3#
- 2.Sc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Sd6#
- 1...Ra6
- 2.Sc6#
- 1...Rb6
- 2.Sc6#
- 1...Re6!
- threat
- 1.Qf1?
- threat
- 2.Sxc6#
- 1...Rd6+
- 2.Sxd6#
- 1...Qxf1
- 2.Sxg3#
- 1...Rxc7
- 2.Sd7#
- 2.Sd6#
- 1...fxe5
- 2.Rxe5#
- 1...Qe2
- 2.Sxg3#
- 1...Rc1
- 2.Sxf3#
- 2.Sc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Sd6#
- 1...Rc2
- 2.Sxf3#
- 2.Sc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Sd6#
- 1...Rc3
- 2.Sxf3#
- 2.Sc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Sd6#
- 1...Rc4
- 2.Sxf3#
- 2.Sxc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Sd6#
- 1...Rc5
- 2.Sxf3#
- 2.Sc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Sd6#
- 1...Ra6
- 2.Sc6#
- 1...Rb6
- 2.Sc6#
- 1...f2
- 2.Qxg2#
- 1...Re6!
- threat
- 1.Sd7+?
- Keys
- 1.Qb1!
- threat
- 2.Sxc6#
- 1...Rd6+
- 2.Sxd6#
- 1...Rxc7
- 2.Sd7#
- 2.Sd6#
- 1...fxe5
- 2.Rxe5#
- 1...Re6
- 2.Rd2#
- 1...Qc2
- 2.Sxg3#
- 1...Rc1
- 2.Sc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Sd6#
- 1...Rc2
- 2.Sd6#
- 1...Rc3
- 2.Sc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Sd6#
- 1...Rc4
- 2.Sxc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Sd6#
- 1...Rc5
- 2.Sc4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Sd6#
- 1...Ra6
- 2.Sc6#
- 2.Rd2#
- 1...Rb6
- 2.Sc6#
- 1...f2
- 2.Rc3#
- threat
- 1.Qb1!
This is a version of 139233
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 11
- Sets
- Q(a);N_GUARD::S(G),XP(c)
- R(f);N_GUARD::S(G)
- R(f);CHECK,N_GUARD::S(G),XR(f)
- R(f);N_GUARD,XP(H)::S(G)
- Tries
- Try
- S(F);CHECK
- Vars
- R(f);P_SPINR(f)::S(F)
- Refutation
- K(d);S_FLIGHT,XR(B)
- Try
- R(B);
- Threat
- R(J)+S(F),XR(f)
- Vars
- R(f);CHECK,N_GUARD::S(G),XR(f)
- Q(a);N_GUARD,XR(B)::S(G),XP(c)
- P(g);OGATE,P_SPINP(g),XS(F)::R1(J),XP(g)
- R(f);N_GUARD::QAB(A)
- R(f);::R(J)+S(F)
- Refutation
- P(b);
- Try
- R(B);
- Threat
- R(J)+S(F),XR(f)
- Vars
- R(f);CHECK,N_GUARD::S(G),XR(f)
- R(f);N_GUARD,XR(B)::S(G)
- P(g);OGATE,P_SPINP(g),XS(F)::R1(J),XP(g)
- R(f);::R(J)+S(F)
- P(b);S_CUTQ(a)::QAB(A)
- Refutation
- R(f);
- Try
- Q(A);XP(c)
- Threat
- QAR1(A)
- Vars
- R(f);CHECK,N_GUARD::S(G),XR(f)
- Q(a);XQ(A)::S(G),XQ(a)
- Q(a);N_GUARD::QAB1(A),XP(b)
- Refutation
- P(g);P_SPINP(g),XS(F)
- Try
- Q(A);
- Threat
- R(J)+S(F),XR(f)
- Vars
- R(f);CHECK,N_GUARD::S(G),XR(f)
- P(g);OGATE,P_SPINP(g),XS(F)::R1(J),XP(g)
- R(f);::R(J)+S(F)
- Refutation
- R(f);
- Try
- Q(A);
- Threat
- R(J)+S(F),XR(f)
- Vars
- R(f);CHECK,N_GUARD::S(G),XR(f)
- Q(a);N_GUARD,XQ(A)::S(G),XP(c)
- P(g);OGATE,P_SPINP(g),XS(F)::R1(J),XP(g)
- Q(a);N_GUARD::S(G),XP(c)
- R(f);::R(J)+S(F)
- P(b);OGATEB::QAB(A),XQ(a)
- Refutation
- R(f);
- Try
- Actual
- Q(A);
- Threat
- R(J)+S(F),XR(f)
- Vars
- R(f);CHECK,N_GUARD::S(G),XR(f)
- P(g);OGATE,P_SPINP(g),XS(F)::R1(J),XP(g)
- R(f);N_GUARD::QAB(A)+R(B)
- Q(a);N_GUARD::S(G),XP(c)
- R(f);N_GUARD::S(G)
- R(f);::R(J)+S(F)
- P(b);S_CUTQ(a)::QAB(A)+R(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).