MESON Chess Problem Database
Problem Display
PID: 19345 (5Q2/3nP3/B7/3RP2N/pr2kpK1/r5n1/bB2PP2/1NbR4 w - - 0 1)
Hartong, Jan
1st HM., Sahovski Vestnik, 1951
#2
12 + 9
SOLUTION
- SOUND
- Sets
- 1...Rc3
- 2.Sxc3#
- 1...Re3
- 2.Qxf4#
- 1...Rf3
- 2.exf3#
- 1...Rxb2
- 2.R1d4#
- 1...Rb3
- 2.R1d4#
- 1...Rd4
- 2.R1xd4#
- 1...Rb5
- 2.R1d4#
- 1...Rb6
- 2.R1d4#
- 1...Rb7
- 2.R1d4#
- 1...Rb8
- 2.R1d4#
- 1...Bxb2
- 2.Qxf4#
- 1...Be3
- 2.f3#
- 1...Bb3
- 2.Sc3#
- 1...Bc4
- 2.R1d4#
- 1...Sf1
- 2.Qf5#
- 1...Sh1
- 2.Qf5#
- 1...Sxe2
- 2.Qf5#
- 1...Sf5
- 2.Qxf5#
- 1...Sxh5
- 2.Qf5#
- 1...Sc5
- 2.Sf6#
- 1...Sxe5+
- 2.Rxe5#
- 1...Sb6
- 2.Sf6#
- 1...Sf6+
- 2.Sxf6#
- 1...Sb8
- 2.Sf6#
- 1...Sxf8
- 2.Sf6#
- 1...f3
- 2.Sxg3#
- 1...Rc3
- Tries
- 1.Sxg3+?
- 1...fxg3
- 2.Qf5#
- 1...Rxg3+!
- 1...fxg3
- 1.Bc4?
- threat
- 2.R1d4#
- 1...Sxe5+
- 2.Rxe5#
- 1...Sf6+
- 2.Sxf6#
- 1...Bxb2
- 2.Sd2#
- 2.Qxf4#
- 1...Sxe2
- 2.Qf5#
- 1...Rd3
- 2.exd3#
- 1...Bd2
- 2.Sxd2#
- 1...Be3
- 2.f3#
- 1...Sf5
- 2.Qxf5#
- 1...Rxc4!
- threat
- 1.R1d3?
- threat
- 2.f3#
- 1...Sxe5+
- 2.Rxe5#
- 1...Sf6+
- 2.Sxf6#
- 1...Rd4
- 2.R3xd4#
- 1...f3
- 2.Sxg3#
- 2.Qxf3#
- 2.exf3#
- 1...Rxd3!
- threat
- 1.Sxg3+?
- Keys
- 1.Bb7!
- 1...Sxe5+
- 2.Rxe5#
- 1...Sf6+
- 2.Sxf6#
- 1...Rxb2
- 2.R1d4#
- 1...Rxb7
- 2.R1d4#
- 1...Bxb2
- 2.Sd2#
- 2.Qxf4#
- 1...Bxb1
- 2.Rb5#
- 1...Bxd5
- 2.Bxd5#
- 1...Sxe2
- 2.Qf5#
- 1...Sxh5
- 2.Qf5#
- 1...Sxf8
- 2.Sf6#
- 1...Rab3
- 2.Rb5#
- 1...Rc3
- 2.Sxc3#
- 1...Rd3
- 2.exd3#
- 1...Re3
- 2.Qxf4#
- 1...Rf3
- 2.exf3#
- 1...Rbb3
- 2.R1d4#
- 2.Rb5#
- 1...Rc4
- 2.Rc5#
- 1...Rd4
- 2.R1xd4#
- 1...Rb5
- 2.R1d4#
- 1...Rb6
- 2.R1d4#
- 1...Bd2
- 2.Sxd2#
- 1...Be3
- 2.f3#
- 1...Bb3
- 2.Sc3#
- 1...Bc4
- 2.R1d4#
- 1...Sf1
- 2.Qf5#
- 1...Sh1
- 2.Qf5#
- 1...Sf5
- 2.Qxf5#
- 1...Sc5
- 2.Sf6#
- 1...Sb6
- 2.Sf6#
- 1...Sb8
- 2.Sf6#
- 1...f3
- 2.Sxg3#
- 1...Sxe5+
- 1.Bb7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 3
- Sets
- R(c);N_GUARD::S(A),XR(c)
- R(c);S_CUTB(a)::QAR1(L),XP(h)
- R(c);OGATE::P(D),XR(c)
- R(f);N_GUARD,XB(C)::R1(B)
- R(f);N_GUARD::R1(B)
- R(f);N_GUARD::R1(B),XR(f)
- B(a);N_GUARD,XB(C)::QAR1(L),XP(h)
- B(a);SBLOCK,S_CUTR(c)::P(E)
- B(b);S_CUTR(c)::S(A)
- B(b);S_CUTR(f)::R1(B)
- S(d);N_GUARD::QAB1(L)
- S(d);N_GUARD,XP(D)::QAB1(L)
- S(d);N_GUARD::QAB1(L),XS(d)
- S(d);N_GUARD,XS(I)::QAB1(L)
- S(i);N_GUARD::S(I)
- S(i);CHECK,OGATE,XP(H)::R1(G),XS(i)
- S(i);CHECK,N_GUARD::S(I),XS(i)
- S(i);N_GUARD,XQ(L)::S(I)
- P(h);N_GUARD,S_CUTR(c)::S(I),XS(d)
- Tries
- Try
- S(I);CHECK,XS(d)
- Vars
- P(h);XS(I)::QAB1(L)
- Refutation
- R(c);CHECK,XS(I)
- Try
- B(J);
- Threat
- R1(B)
- Vars
- S(i);CHECK,OGATE,XP(H)::R1(G),XS(i)
- S(i);CHECK,N_GUARD::S(I),XS(i)
- S(d);N_GUARD,XP(D)::QAB1(L)
- R(c);OGATE::P(D),XR(c)
- B(a);N_GUARD::S(A),XB(a)
- B(a);SBLOCK,S_CUTR(c)::P(E)
- S(d);N_GUARD::QAB1(L),XS(d)
- Refutation
- R(f);XB(J)
- Try
- R(B);
- Threat
- P(E)
- Vars
- S(i);CHECK,OGATE,XP(H)::R1(G),XS(i)
- S(i);CHECK,N_GUARD::S(I),XS(i)
- R(f);N_GUARD::R1(B),XR(f)
- Refutation
- R(c);XR(B)
- Try
- Actual
- B(J);
- Vars
- S(i);CHECK,OGATE,XP(H)::B(J)+R(G),DCHECK,XS(i)
- S(i);CHECK,N_GUARD::S(I),XS(i)
- R(f);N_GUARD,XB(C)::R1(B)
- R(f);N_GUARD,XB(J)::R1(B)
- B(b);N_GUARD,XS(A)::B(J)+R(G)
- B(b);OGATE,P_SPINB(b),XR(G)::B(J),XB(b)
- S(d);N_GUARD,XP(D)::QAB1(L)
- S(d);N_GUARD,XS(I)::QAB1(L)
- S(i);N_GUARD,XQ(L)::S(I)
- R(c);S_CUTB(b)::B(J)+R(G)
- R(c);N_GUARD::S(A),XR(c)
- R(c);OGATE::P(D),XR(c)
- R(c);S_CUTB(a)::QAR1(L),XP(h)
- R(f);N_GUARD,S_CUTB(b)::B(J)+R(G)
- R(f);N_GUARD::R1(B),XR(f)
- R(f);N_GUARD::R1(B)
- B(a);N_GUARD::S(A),XB(a)
- B(a);SBLOCK,S_CUTR(c)::P(E)
- B(b);S_CUTR(c)::S(A)
- B(b);S_CUTR(f)::R1(B)
- S(d);N_GUARD::QAB1(L)
- S(d);N_GUARD::QAB1(L),XS(d)
- S(i);N_GUARD::S(I)
- P(h);N_GUARD,S_CUTR(c)::S(I),XS(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).