MESON Chess Problem Database
Problem Display
PID: 200238 (B3N1K1/5RP1/4k1p1/1rr1p3/8/3N2Bn/6Q1/b5n1 w - - 0 1)
Albarda, Johannes
Het Parool, 1972
#2
8 + 8
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Sxc5#
- 1...Rb2
- 2.Sxc5#
- 1...Rb3
- 2.Sxc5#
- 1...Rb4
- 2.Sxc5#
- 1...Rb6
- 2.Sxc5#
- 1...Rb7
- 2.Sxc5#
- 1...Rb8
- 2.Sxc5#
- 1...Rc6
- 2.Qxc6#
- 1...Se2
- 2.Qxh3#
- 1...Sf3
- 2.Qxh3#
- 1...Rb1
- Tries
- 1.Be1?
- threat
- 2.Qg4#
- 2.Qxg6#
- 1...Rb4
- 2.Sxc5#
- 2.Qxg6#
- 1...Rb7
- 2.Sxc5#
- 1...Rc4
- 2.Qxg6#
- 1...Rc6
- 2.Qxc6#
- 1...Sf2
- 2.Qxg6#
- 1...Sf4
- 2.Qg4#
- 1...Sg5
- 2.Qg4#
- 1...g5
- 2.Qg4#
- 1...e4!
- threat
- 1.Bf2?
- threat
- 2.Qg4#
- 2.Qxg6#
- 1...Sxf2
- 2.Qxg6#
- 1...Rb4
- 2.Sxc5#
- 2.Qxg6#
- 1...Rb7
- 2.Sxc5#
- 1...Rc4
- 2.Qxg6#
- 1...Rc6
- 2.Qxc6#
- 1...Sf4
- 2.Qg4#
- 1...Sg5
- 2.Qg4#
- 1...g5
- 2.Qg4#
- 1...e4!
- threat
- 1.Bh2?
- threat
- 2.Qg4#
- 2.Qxg6#
- 1...Rb4
- 2.Sxc5#
- 2.Qxg6#
- 1...Rb7
- 2.Sxc5#
- 1...Rc4
- 2.Qxg6#
- 1...Rc6
- 2.Qxc6#
- 1...Sf2
- 2.Qxg6#
- 1...Sf4
- 2.Qg4#
- 1...Sg5
- 2.Qg4#
- 1...g5
- 2.Qg4#
- 1...e4!
- threat
- 1.Bh4?
- threat
- 2.Qg4#
- 2.Qxg6#
- 1...Rb4
- 2.Sxc5#
- 2.Qxg6#
- 1...Rb7
- 2.Sxc5#
- 1...Rc4
- 2.Qxg6#
- 1...Rc6
- 2.Qxc6#
- 1...Sf2
- 2.Qxg6#
- 1...Sf4
- 2.Qg4#
- 1...Sg5
- 2.Qg4#
- 1...g5
- 2.Qg4#
- 1...e4!
- threat
- 1.Bxe5?
- threat
- 2.Qg4#
- 2.Qxg6#
- 1...Rxe5
- 2.Qc6#
- 2.Qxg6#
- 1...Bxe5
- 2.Qg4#
- 1...Rb4
- 2.Qxg6#
- 1...Rc4
- 2.Qxg6#
- 1...Rc6
- 2.Qxc6#
- 1...Sf2
- 2.Qxg6#
- 1...Sf4
- 2.Qg4#
- 1...Sg5
- 2.Qg4#
- 1...g5
- 2.Qg4#
- 1...Rb7!
- threat
- 1.Bc6?
- threat
- 2.Bd7#
- 1...Rxc6
- 2.Qxc6#
- 1...e4
- 2.Sc7#
- 1...Rb7
- 2.Sxc5#
- 1...Sf3
- 2.Qxh3#
- 1...Rd5!
- threat
- 1.Be1?
- Keys
- 1.Qe4!
- threat
- 2.Qxg6#
- 2.Qg4#
- 1...Rb4
- 2.Sxc5#
- 2.Qxg6#
- 1...Rb7
- 2.Sxc5#
- 1...Rc4
- 2.Qxg6#
- 1...Rc6
- 2.Qxc6#
- 1...Sf2
- 2.Sf4#
- 2.Qxg6#
- 1...Sf4
- 2.Sxf4#
- 1...g5
- 2.Qf5#
- 2.Qg6#
- 2.Qg4#
- threat
- 1.Qe4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 8
- Sets
- R(d);N_GUARD::S(B),XR(e)
- R(d);N_GUARD,P_PINS(G)::S(B),XR(e)
- R(e);N_GUARD::QAR2(A),XR(e)
- S(b);N_GUARD::QAB(A),XS(c)
- Tries
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- R(d);N_GUARD::S(B),XR(e)
- R(e);::QAR2(A),XP(h)
- R(e);N_GUARD::QAR2(A),XR(e)
- S(c);::QAR2(A),XP(h)
- S(c);::QAB(A)
- P(h);::QAB(A)
- Refutation
- P(f);
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- S(c);XB(C)::QAR2(A),XP(h)
- R(d);N_GUARD::S(B),XR(e)
- R(e);::QAR2(A),XP(h)
- R(e);N_GUARD::QAR2(A),XR(e)
- S(c);::QAB(A)
- P(h);::QAB(A)
- Refutation
- P(f);
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- R(d);N_GUARD::S(B),XR(e)
- R(e);::QAR2(A),XP(h)
- R(e);N_GUARD::QAR2(A),XR(e)
- S(c);::QAR2(A),XP(h)
- S(c);::QAB(A)
- P(h);::QAB(A)
- Refutation
- P(f);
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- R(d);N_GUARD::S(B),XR(e)
- R(e);::QAR2(A),XP(h)
- R(e);N_GUARD::QAR2(A),XR(e)
- S(c);::QAR2(A),XP(h)
- S(c);::QAB(A)
- P(h);::QAB(A)
- Refutation
- P(f);
- Try
- B(C);XP(f)
- Threat
- DUALS(2)
- Vars
- B(a);XB(C)::QAB(A)
- R(d);::QAR2(A),XP(h)
- R(e);::QAR2(A),XP(h)
- R(e);N_GUARD::QAR2(A),XR(e)
- S(c);::QAR2(A),XP(h)
- S(c);::QAB(A)
- P(h);::QAB(A)
- Refutation
- R(d);
- Try
- B(F);
- Threat
- B(F)
- Vars
- R(e);OGATE,XB(F)::QAR2(A),XR(e)
- P(f);::S(G)
- R(d);N_GUARD::S(B),XR(e)
- S(b);N_GUARD::QAB(A),XS(c)
- Refutation
- R(e);
- Try
- Actual
- Q(A);P_PINP(f)
- Threat
- DUALS(2)
- Vars
- R(d);N_GUARD::S(B),XR(e)
- R(e);::QAR2(A),XP(h)
- R(e);N_GUARD::QAR2(A),XR(e)
- S(c);N_GUARD::S(B),XS(c)
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).