MESON Chess Problem Database
Problem Display
PID: 271270 (4R3/4B3/1p2r1p1/6r1/1NnPk3/3n1RpB/2bPN1P1/Q5K1 w - - 0 1)
Shpakovsky, Aleksandr Nikolaevich
64 Shakhmatnoe obozrenie, 2023
#2
11 + 9
SOLUTION
- SOUND
- Sets
- 1...Ra5
- 2.Sxg3#
- 1...Rb5
- 2.Sxg3#
- 1...Rc5
- 2.Sxg3#
- 1...Rd5
- 2.Sxg3#
- 1...Rge5
- 2.Sxg3#
- 1...Rf5
- 2.Sxg3#
- 1...Rh5
- 2.Sxg3#
- 1...Sc1
- 2.Rf4#
- 1...Se1
- 2.Rf4#
- 1...Sdb2
- 2.Rf4#
- 1...Sf2
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sc5
- 2.Rf4#
- 1...Sde5
- 2.Rf4#
- 1...Scb2
- 2.Re3#
- 1...Sa3
- 2.Re3#
- 1...Se3
- 2.Rxe3#
- 1...Sa5
- 2.Re3#
- 1...Sce5
- 2.Re3#
- 1...Sd6
- 2.Re3#
- 1...Ra5
- Tries
- 1.Sd5?
- threat
- 2.Sdc3#
- 1...Rxd5
- 2.Sxg3#
- 1...Kxd5!
- threat
- 1.Bf5+?
- 1...Rxf5
- 2.Sxg3#
- 1...gxf5!
- 1...Rxf5
- 1.Bc5?
- threat
- 2.Sc3#
- 1...Rxc5
- 2.Sxg3#
- 1...Sxc5
- 2.Rf4#
- 1...bxc5!
- threat
- 1.Bxg5?
- threat
- 2.Sxg3#
- 2.Qa8#
- 1...Rxe8
- 2.Sxg3#
- 1...Ba4
- 2.Sxg3#
- 1...Sdb2
- 2.Rf4#
- 2.Qa8#
- 1...Sf4
- 2.Sxg3#
- 2.Rxf4#
- 1...Sc5
- 2.Sxg3#
- 2.Rf4#
- 1...Sde5
- 2.Sxg3#
- 2.Rf4#
- 1...Scb2
- 2.Re3#
- 2.Qa8#
- 1...Sa3
- 2.Sxg3#
- 2.Re3#
- 1...Se3
- 2.Sxg3#
- 2.Rxe3#
- 1...Sa5
- 2.Sxg3#
- 2.Re3#
- 1...Sce5
- 2.Sxg3#
- 2.Re3#
- 1...Sd6
- 2.Sxg3#
- 2.Re3#
- 1...Sxb4!
- threat
- 1.Rd8?
- threat
- 2.Sc3#
- 1...Rd5
- 2.Sxg3#
- 1...Sd6
- 2.Re3#
- 1...Rd6!
- threat
- 1.Qa8+?
- 1...Rd5
- 2.Qxd5#
- 1...Rc6!
- 1...Rd5
- 1.d5?
- threat
- 2.Qd4#
- 1...Rxd5
- 2.Sxg3#
- 1...Scb2
- 2.Re3#
- 1...Sdb2!
- threat
- 1.Sd5?
- Keys
- 1.Bf6!
- threat
- 2.Sc3#
- 1...Rge5
- 2.Sxg3#
- 1...Ree5
- 2.Qa8#
- 1...Sde5
- 2.Rf4#
- 1...Sce5
- 2.Re3#
- threat
- 1.Bf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 17
- Sets
- R(f);N_GUARD::S(D),XP(c)
- S(b);N_GUARD::R1(F)
- S(b);N_GUARD::R1(F),XS(b)
- S(d);N_GUARD::R1(F)
- S(d);N_GUARD::R1(F),XS(d)
- Tries
- Try
- S(H);
- Threat
- S(H)
- Vars
- R(f);N_GUARD,SBLOCK,XS(H)::S(D),XP(c)
- Refutation
- K(e);S_FLIGHT,XS(H)
- Try
- B(G);CHECK
- Vars
- R(f);XB(G)::S(D),XP(c)
- Refutation
- P(i);XB(G)
- Try
- B(J);P_PINR(h)
- Threat
- S(D)
- Vars
- R(f);N_GUARD,XB(J)::S(D),XP(c)
- S(b);N_GUARD,XB(J)::R1(F)
- Refutation
- P(g);XB(J)
- Try
- B(J);P_PINR(h),XR(f)
- Threat
- DUALS(2)
- Vars
- R(h);N_SPINR(h),XR(K)::S(D),XP(c)
- B(a);::S(D),XP(c)
- Refutation
- S(b);XS(H)
- Try
- R(K);
- Threat
- S(D)
- Vars
- R(f);N_GUARD::S(D),XP(c)
- S(d);N_GUARD::R1(F)
- Refutation
- R(h);
- Try
- Q(A);CHECK
- Vars
- R(f);N_GUARD,P_SPINR(f)::QAB1(A),XR(f)
- Refutation
- R(h);P_SPINR(h)
- Try
- P(I);
- Threat
- QAR1(A)
- Vars
- R(f);N_GUARD,XP(I)::S(D),XP(c)
- S(d);N_GUARD::R1(F)
- Refutation
- S(b);
- Try
- Actual
- B(J);P_PINR(h)
- Threat
- S(D)
- Vars
- R(f);N_GUARD,N_SPINR(h)::S(D),XP(c)
- R(h);S_CUTR(f)::QAB(A)
- S(b);N_GUARD,N_SPINR(h)::R1(F)
- S(d);N_GUARD,N_SPINR(h)::R1(F)
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).