MESON Chess Problem Database
Problem Display
PID: 154268 (8/5P2/1R3p1q/P1k1n1nR/Pp5r/1BPp3r/1B1N2Q1/2K1N2b w - - 0 1)
Neptaev, Nikolai I
Die Schwalbe, 2014
#2
12 + 10
SOLUTION
- SOUND
- Sets
- 1...Qxh5
- 2.f8Q#
- 2.f8B#
- 1...Qg6
- 2.f8Q#
- 2.f8B#
- 1...Rd4
- 2.cxd4#
- 1...Rxh5
- 2.cxb4#
- 1...Sef3
- 2.Sxd3#
- 1...Sc4
- 2.Rc6#
- 2.cxb4#
- 1...Sg4
- 2.Se4#
- 2.Rc6#
- 2.cxb4#
- 1...Sc6
- 2.Rxc6#
- 1...Sg6
- 2.Rc6#
- 1...Sd7
- 2.Rc6#
- 1...Sexf7
- 2.Rc6#
- 1...Sgf3
- 2.Sxd3#
- 1...Se4
- 2.cxb4#
- 1...Se6
- 2.Rc6#
- 1...Sgxf7
- 2.Rc6#
- 1...Sh7
- 2.Rc6#
- 1...Qxh5
- Tries
- 1.Bc4?
- threat
- 2.cxb4#
- 1...Rxc4
- 2.Sb3#
- 1...Sc6
- 2.Rxc6#
- 1...b3
- 2.Ba3#
- 1...bxc3!
- threat
- 1.Rxh4?
- threat
- 2.cxb4#
- 1...Qxh4
- 2.f8Q#
- 2.f8B#
- 1...bxc3
- 2.Ba3#
- 1...Sc6
- 2.Rxc6#
- 1...Rxh4!
- threat
- 1.Qe4?
- threat
- 2.cxb4#
- 1...bxc3
- 2.Ba3#
- 1...Sc6
- 2.Rxc6#
- 1...Rxe4!
- threat
- 1.Qg1+?
- 1...Rd4
- 2.Qxd4#
- 2.cxb4#
- 2.cxd4#
- 1...Re3!
- 1...Rd4
- 1.Qf2+?
- 1...Rd4
- 2.Qxd4#
- 2.cxb4#
- 2.cxd4#
- 1...Re3!
- 1...Rd4
- 1.Bc4?
- Keys
- 1.Be6!
- threat
- 2.Sb3#
- 1...Sxe6
- 2.Rc6#
- 1...Sgxf7
- 2.Rc6#
- 1...Sc6
- 2.Rxc6#
- 1...Sgf3
- 2.Sxd3#
- 1...Se4
- 2.cxb4#
- 1...Sh7
- 2.Rc6#
- 1...b3
- 2.Sxb3#
- threat
- 1.Be6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- Q(j);N_GUARD,XR(J)::P=Q
- Q(j);N_GUARD::P=Q
- R(e);OGATE::P(G),XR(e)
- R(e);N_GUARD,XR(J)::P(G),XP(d)
- S(g);N_GUARD,P_SPINS(h),S_CUTR(c)::S(B),XP(b)
- S(g);N_GUARD,P_SPINS(h)::R1(K),XS(g)
- S(g);N_GUARD,P_SPINS(h)::R1(K)
- S(g);N_GUARD,P_SPINS(h),XP(L)::R1(K)
- S(h);P_PINS(D),P_SPINS(g),S_CUTR(c)::S(B),XP(b)
- S(h);P_PINS(D),P_SPINS(g),S_CUTR(e)::P(G),XP(d)
- S(h);P_PINS(D),P_SPINS(g)::R1(K)
- S(h);P_PINS(D),P_SPINS(g),XP(L)::R1(K)
- Tries
- Try
- B(F);
- Threat
- P(G),XP(d)
- Vars
- R(e);P_PINP(G),SBLOCK,XB(F)::S(D)
- S(g);N_GUARD,P_SPINS(h)::R1(K),XS(g)
- P(d);OGATEB::B(C)
- Refutation
- P(d);XP(G)
- Try
- R(J);XR(e)
- Threat
- P(G),XP(d)
- Vars
- Q(j);N_GUARD,XR(J)::P=Q
- P(d);OGATEB,XP(G)::B(C)
- S(g);N_GUARD::R1(K),XS(g)
- Refutation
- R(c);XR(J)
- Try
- Q(E);
- Threat
- P(G),XP(d)
- Vars
- P(d);OGATEB,XP(G)::B(C)
- S(g);N_GUARD,P_SPINS(h)::R1(K),XS(g)
- Refutation
- R(e);XQ(E)
- Try
- Q(E);CHECK
- Refutation
- R(c);P_SPINR(c)
- Try
- Q(E);CHECK
- Refutation
- R(c);P_SPINR(c)
- Try
- Actual
- B(F);
- Threat
- S(D)
- Vars
- S(h);P_PINS(D),P_SPINS(g),XB(F)::R1(K)
- S(h);P_PINS(D),P_SPINS(g),XP(L)::R1(K)
- S(g);N_GUARD,P_SPINS(h)::R1(K),XS(g)
- S(h);P_PINS(D),P_SPINS(g),S_CUTR(c)::S(B),XP(b)
- S(h);P_PINS(D),P_SPINS(g),S_CUTR(e)::P(G),XP(d)
- S(h);P_PINS(D),P_SPINS(g)::R1(K)
- P(d);::S(D),XP(d)
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).