MESON Chess Problem Database
Problem Display
PID: 135546 (1n1K4/2N2P2/1Rp1p3/2kNQ3/P1p4R/7b/1b1Pnr2/2B1rB2 w - - 0 1)
Rossomakho, Yakov V
StrateGems, 2009
#2
11 + 10
SOLUTION
- SOUND
- Sets
- 1...Rg2
- 2.f8Q#
- 2.f8B#
- 1...Rh2
- 2.f8Q#
- 2.f8B#
- 1...Rf5
- 2.Sxe6#
- 1...Ba1
- 2.Ba3#
- 1...Ba3
- 2.Bxa3#
- 1...Bd4
- 2.Ba3#
- 1...Bxe5
- 2.Ba3#
- 1...Bxf1
- 2.Sxe6#
- 1...Bg2
- 2.Sxe6#
- 1...Bf5
- 2.f8Q#
- 2.f8B#
- 1...Sxc1
- 2.Rxc4#
- 1...Sg1
- 2.Rxc4#
- 1...Sc3
- 2.Rxc4#
- 1...Sg3
- 2.Rxc4#
- 1...Sf4
- 2.f8Q#
- 2.f8B#
- 1...Sa6
- 2.Sxa6#
- 1...Sd7
- 2.Sa6#
- 1...cxd5
- 2.Qd6#
- 1...Rg2
- Tries
- 1.Rxb2?
- threat
- 2.Sc3#
- 2.Se3#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Se7#
- 1...Sxc1
- 2.Se3#
- 2.Rxc4#
- 1...exd5
- 2.Qe7#
- 1...Rf4
- 2.Sc3#
- 2.Se3#
- 2.Sxf4#
- 2.Sb6#
- 2.Sf6#
- 2.Se7#
- 1...Rf5
- 2.Sxe6#
- 1...Rf6
- 2.Sc3#
- 2.Se3#
- 2.Sf4#
- 2.Sb6#
- 2.Sxf6#
- 2.Se7#
- 1...Bg2
- 2.Sxe6#
- 1...Sg1
- 2.Se3#
- 2.Rxc4#
- 1...Sc3
- 2.Rxc4#
- 1...Sg3
- 2.Se3#
- 2.Rxc4#
- 1...Sd4
- 2.Se3#
- 1...Sf4
- 2.f8Q#
- 2.f8B#
- 1...Sd7
- 2.Sa6#
- 1...c3
- 2.Sxc3#
- 2.Se3#
- 2.Sb6#
- 2.Sf6#
- 2.Se7#
- 1...cxd5!
- threat
- 1.Rb7?
- threat
- 2.Sc3#
- 1...Bxe5
- 2.Ba3#
- 1...Sxc1
- 2.Rxc4#
- 1...exd5
- 2.Qe7#
- 1...Rf5
- 2.Sxe6#
- 1...Bc3
- 2.Sxc3#
- 1...Bd4
- 2.Ba3#
- 1...Bg2
- 2.Sxe6#
- 1...Sg1
- 2.Rxc4#
- 1...Sc3
- 2.Rxc4#
- 1...Sg3
- 2.Rxc4#
- 1...Sd4
- 2.Se3#
- 1...Sf4
- 2.f8Q#
- 2.f8B#
- 1...Sd7
- 2.Sa6#
- 1...c3
- 2.Sxc3#
- 2.Se3#
- 2.Sb4#
- 2.Sb6#
- 2.Sf6#
- 2.Se7#
- 1...cxd5!
- threat
- 1.Rxb8?
- threat
- 2.Sc3#
- 2.Sa6#
- 1...Bxe5
- 2.Ba3#
- 1...Sxc1
- 2.Sa6#
- 2.Rxc4#
- 1...exd5
- 2.Sa6#
- 2.Qe7#
- 1...Rf5
- 2.Sa6#
- 2.Sxe6#
- 1...Bc3
- 2.Sxc3#
- 2.Sa6#
- 1...Bd4
- 2.Sa6#
- 2.Ba3#
- 1...Bg2
- 2.Sa6#
- 2.Sxe6#
- 1...Sg1
- 2.Sa6#
- 2.Rxc4#
- 1...Sc3
- 2.Sa6#
- 2.Rxc4#
- 1...Sg3
- 2.Sa6#
- 2.Rxc4#
- 1...Sd4
- 2.Se3#
- 2.Sa6#
- 1...Sf4
- 2.Sa6#
- 2.f8Q#
- 2.f8B#
- 1...c3
- 2.Sxc3#
- 2.Se3#
- 2.Sb4#
- 2.Sb6#
- 2.Sf6#
- 2.Se7#
- 2.Sa6#
- 1...cxd5!
- threat
- 1.Qd4+?
- 1...Kd6
- 2.Sb5#
- 2.Se8#
- 1...Bxd4
- 2.Ba3#
- 1...Sxd4!
- 1...Kd6
- 1.Rxb2?
- Keys
- 1.a5!
- threat
- 2.Sc3#
- 1...Bxe5
- 2.Ba3#
- 1...Sxc1
- 2.Rxc4#
- 1...cxd5
- 2.Qd6#
- 1...exd5
- 2.Qe7#
- 1...Sd4
- 2.Se3#
- 1...Rf5
- 2.Sxe6#
- 1...Bc3
- 2.Sxc3#
- 1...Bd4
- 2.Ba3#
- 1...Bg2
- 2.Sxe6#
- 1...Sg1
- 2.Rxc4#
- 1...Sc3
- 2.Rxc4#
- 1...Sg3
- 2.Rxc4#
- 1...Sf4
- 2.f8Q#
- 2.f8B#
- 1...Sd7
- 2.Sa6#
- 1...c3
- 2.Sxc3#
- 2.Se3#
- 2.Sb4#
- 2.Sf6#
- 2.Se7#
- threat
- 1.a5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 4
- Sets
- R(d);N_GUARD::P=Q
- R(d);S_CUTB(e)::S(I),XP(i)
- B(b);OGATE::B(A)
- B(b);OGATE::B(A),XB(b)
- B(b);OGATE,XQ(G)::B(A)
- B(e);N_GUARD,XB(B)::S(I),XP(i)
- B(e);N_GUARD::S(I),XP(i)
- B(e);S_CUTR(d)::P=Q
- S(c);XB(A)::R1(E),XP(f)
- S(c);::R1(E),XP(f)
- S(c);S_CUTR(d)::P=Q
- S(j);N_GUARD::S(I),XS(j)
- S(j);N_GUARD::S(I)
- P(h);P_SPINP(h),XS(F)::QAB1(G)
- Tries
- Try
- R(H);XB(b)
- Threat
- DUALS(6)
- Vars
- P(i);OGATE,P_SPINP(i),XS(F)::QAB(G)
- R(d);S_CUTB(e)::S(I),XP(i)
- B(e);N_GUARD::S(I),XP(i)
- S(c);::R1(E),XP(f)
- S(c);::QAR(G)+S(F)
- S(c);S_CUTR(d)::P=Q
- S(j);N_GUARD::S(I)
- Refutation
- P(h);P_SPINP(h),XS(F)
- Try
- R(H);
- Threat
- QAR(G)+S(F)
- Vars
- B(b);OGATE,XQ(G)::B(A)
- S(c);XB(A)::R1(E),XP(f)
- P(i);OGATE,P_SPINP(i),XS(F)::QAB(G)
- R(d);S_CUTB(e)::S(I),XP(i)
- B(b);::QAR(G)+S(F),XB(b)
- B(b);OGATE::B(A)
- B(e);N_GUARD::S(I),XP(i)
- S(c);::R1(E),XP(f)
- S(c);S_CUTB(b)::QAR(G)+S(F)
- S(c);S_CUTR(d)::P=Q
- S(j);N_GUARD::S(I)
- Refutation
- P(h);P_SPINP(h),XS(F)
- Try
- R(H);XS(j)
- Threat
- DUALS(2)
- Vars
- B(b);OGATE,XQ(G)::B(A)
- Refutation
- P(h);P_SPINP(h),XS(F)
- Try
- Q(G);CHECK
- Vars
- B(b);OGATE,XQ(G)::B(A)
- Refutation
- S(c);XQ(G)
- Try
- Actual
- P(D);
- Threat
- QAR(G)+S(F)
- Vars
- B(b);OGATE,XQ(G)::B(A)
- S(c);XB(A)::R1(E),XP(f)
- P(h);P_SPINP(h),XS(F)::QAB1(G)
- P(i);OGATE,P_SPINP(i),XS(F)::QAB(G)
- S(c);S_CUTB(b)::QAR(G)+S(F)
- R(d);S_CUTB(e)::S(I),XP(i)
- B(b);::QAR(G)+S(F),XB(b)
- B(b);OGATE::B(A)
- B(e);N_GUARD::S(I),XP(i)
- S(c);::R1(E),XP(f)
- S(c);S_CUTR(d)::P=Q
- S(j);N_GUARD::S(I)
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).