MESON Chess Problem Database
Problem Display
PID: 255364 (4N1B1/2q1P3/1npNnp2/R1pkr1p1/2rPpR2/B1P1PP2/7Q/2b2K2 w - - 0 1)
Murashev, Pavel Aleksandrovich
Problemist Ukraini, 2021
#2
13 + 12
SOLUTION
- SOUND
- Sets
- 1...Qxd6
- 2.Sxf6#
- 1...Ra4
- 2.Rxc5#
- 1...Rb4
- 2.Rxc5#
- 1...Rxd4
- 2.Rxc5#
- 1...Rf5
- 2.Rxf5#
- 2.fxe4#
- 1...Qxd6
- Tries
- 1.Sf5?
- threat
- 2.Sxf6#
- 2.Sxc7#
- 1...Qxe7
- 2.Sxe7#
- 1...Rxd4
- 2.Rxc5#
- 1...Rxf5
- 2.fxe4#
- 1...Ra4
- 2.Rxc5#
- 1...Rb4
- 2.Rxc5#
- 1...Qd6
- 2.Sxf6#
- 1...Qb8
- 2.Sxf6#
- 1...Qd8
- 2.Sxf6#
- 1...Qa7
- 2.Sxf6#
- 1...Qb7
- 2.Sxf6#
- 1...Qd7
- 2.Sxf6#
- 1...Qc8
- 2.Sxf6#
- 1...Sd7
- 2.Sxc7#
- 1...Sa8
- 2.Sxf6#
- 1...Rxc3!
- threat
- 1.Bxc5?
- threat
- 2.Sxf6#
- 2.Sxc7#
- 1...Qxd6
- 2.Sxf6#
- 1...Rxc5
- 2.Rxc5#
- 1...Qb8
- 2.Sxf6#
- 1...Qd8
- 2.Sxf6#
- 1...Qa7
- 2.Sxf6#
- 1...Qb7
- 2.Sxf6#
- 1...Qd7
- 2.Sxf6#
- 1...Qc8
- 2.Sxf6#
- 1...Rf5
- 2.Sxc7#
- 2.Rxf5#
- 2.fxe4#
- 1...Sd7
- 2.Sxc7#
- 1...Sa8
- 2.Sxf6#
- 1...f5
- 2.Sf6#
- 2.Sxc7#
- 1...Qxe7!
- threat
- 1.Qa2?
- threat
- 2.Rxc5#
- 1...Qxd6
- 2.Sxf6#
- 1...Sa4
- 2.Qxc4#
- 1...Sd7
- 2.Qxc4#
- 1...Bxa3!
- threat
- 1.dxc5?
- threat
- 2.Sxf6#
- 2.Sxc7#
- 1...Qxd6
- 2.Sxf6#
- 1...Rxc5
- 2.Rxc5#
- 1...Rf5
- 2.Rxf5#
- 1...Qb8
- 2.Sxf6#
- 1...Qd8
- 2.Sxf6#
- 1...Qa7
- 2.Sxf6#
- 1...Qb7
- 2.Sxf6#
- 1...Qd7
- 2.Sxf6#
- 1...Qc8
- 2.Sxf6#
- 1...Sd7
- 2.Sxc7#
- 1...Sa8
- 2.Sxf6#
- 1...f5
- 2.Sf6#
- 2.Sxc7#
- 1...Qxe7!
- threat
- 1.Sf5?
- Keys
- 1.Rf5!
- threat
- 2.fxe4#
- 1...Qxd6
- 2.Sxf6#
- 1...Rxd4
- 2.Rxc5#
- 1...Rxf5
- 2.Sxc7#
- 1...exf3
- 2.e4#
- threat
- 1.Rf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- Q(l);SBLOCK,XS(J)::S(L),XP(k)
- R(b);N_GUARD::R1(I),XP(d)
- R(b);N_GUARD,XP(G)::R1(I),XP(d)
- Tries
- Try
- S(J);
- Threat
- DUALS(2)
- Vars
- Q(l);XP(K)::S(J),XQ(l)
- R(b);N_GUARD,XP(G)::R1(I),XP(d)
- R(f);N_GUARD,XS(J)::P(F),XP(c)
- R(b);N_GUARD::R1(I),XP(d)
- Q(l);::S(L),XP(k)
- S(h);::S(L),XQ(l)
- S(h);::S(L),XP(k)
- Refutation
- R(b);XP(D)
- Try
- B(C);XP(d)
- Threat
- DUALS(2)
- Vars
- Q(l);XS(J)::S(L),XP(k)
- R(b);OGATE,P_SPINR(b),XB(C)::R1(I),XR(b)
- Q(l);::S(L),XP(k)
- S(h);::S(L),XQ(l)
- S(h);::S(L),XP(k)
- Refutation
- Q(l);XP(K)
- Try
- Q(B);P_PINR(b)
- Threat
- R1(I),XP(d)
- Vars
- Q(l);SBLOCK,XS(J)::S(L),XP(k)
- S(h);N_GUARD::QAB1(B),XR(b)
- Refutation
- B(a);XB(C)
- Try
- P(G);XP(d)
- Threat
- DUALS(2)
- Vars
- Q(l);XS(J)::S(L),XP(k)
- R(b);OGATE,P_SPINR(b),XP(G)::R1(I),XR(b)
- R(f);OGATEB::R(H),XR(f)
- Q(l);::S(L),XP(k)
- S(h);::S(L),XQ(l)
- S(h);::S(L),XP(k)
- Refutation
- Q(l);XP(K)
- Try
- Actual
- R(H);P_PINR(f)
- Threat
- P(F),XP(c)
- Vars
- Q(l);SBLOCK,XS(J)::S(L),XP(k)
- R(b);N_GUARD,XP(G)::R1(I),XP(d)
- R(f);N_SPINR(f),P_PINP(F),XR(H)::S(L),XQ(l)
- P(c);OGATE,XP(F)::P(E)
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).