MESON Chess Problem Database
Problem Display
PID: 141522 (3B1rB1/3p3b/NQ1nn3/1p1kp1RN/qR6/2rP1p2/4P2K/8 w - - 0 1)
de Haas, Bastian Evert
2nd HM., 07. Kwik-Toernooi, 1976
#2
10 + 11
| 102 | Probleemblad | 1976 |
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Rd4#
- 1...Qc2
- 2.Rd4#
- 1...Qb3
- 2.Rd4#
- 1...Qa1
- 2.Rd4#
- 1...Qa2
- 2.Rd4#
- 1...Qa3
- 2.Rd4#
- 1...Qxb4
- 2.Sxb4#
- 1...Qa5
- 2.Rd4#
- 1...Qxa6
- 2.Rd4#
- 1...Ra3
- 2.Sc7#
- 2.Qc5#
- 1...Rb3
- 2.Sc7#
- 2.Qc5#
- 1...Rxd3
- 2.Sc7#
- 2.Qc5#
- 1...Rc5
- 2.Qxc5#
- 1...Rc6
- 2.Qd4#
- 1...Rc7
- 2.Sxc7#
- 1...Rf4
- 2.Sxf4#
- 1...Rf6
- 2.Sxf6#
- 1...Rxd8
- 2.Sf4#
- 2.Sf6#
- 1...Re8
- 2.Sf4#
- 2.Sf6#
- 1...Rxg8
- 2.Sf6#
- 1...Sc4
- 2.Sc7#
- 2.Qc5#
- 1...Sf5
- 2.e4#
- 1...Sf7
- 2.Sf6#
- 1...Qd1
- Tries
- 1.Bf7?
- threat
- 2.Sf4#
- 2.Sf6#
- 1...Qxb4
- 2.Sf6#
- 2.Sxb4#
- 1...Sxf7
- 2.Sf6#
- 1...Rc4
- 2.Sf6#
- 1...Bf5
- 2.Sf6#
- 1...Se4
- 2.Sf4#
- 1...Sf5
- 2.Sf6#
- 2.e4#
- 1...Se8
- 2.Sf4#
- 1...Rxf7!
- threat
- 1.Rxa4?
- threat
- 2.Sb4#
- 2.Rd4#
- 1...Rxd3
- 2.Sc7#
- 2.Qc5#
- 1...Rxg8
- 2.Sf6#
- 2.Sb4#
- 1...Bxd3
- 2.Rd4#
- 1...Bxg8
- 2.Sb4#
- 1...bxa4
- 2.Sb4#
- 1...Rb3
- 2.Sc7#
- 2.Rd4#
- 2.Qc5#
- 1...Rc5
- 2.Qxc5#
- 1...Rf4
- 2.Sxf4#
- 1...Rf5
- 2.Sb4#
- 1...Rf7
- 2.Sb4#
- 1...Bf5
- 2.Sb4#
- 1...Sc4
- 2.Sb4#
- 2.Sc7#
- 2.Qc5#
- 1...Sf5
- 2.Sb4#
- 2.e4#
- 1...Sf7
- 2.Sf6#
- 2.Sb4#
- 1...b4
- 2.Sxb4#
- 1...Rc4!
- threat
- 1.Bf7?
- Keys
- 1.Bc7!
- threat
- 2.Qxd6#
- 1...Qxb4
- 2.Sxb4#
- 1...Qxa6
- 2.Rd4#
- 1...Rxc7
- 2.Sxc7#
- 1...Rc6
- 2.Qd4#
- 1...Sc4
- 2.Qc5#
- 1...Se4
- 2.Rxe5#
- 1...Sf5
- 2.e4#
- 1...Sb7
- 2.Rxe5#
- 1...Sf7
- 2.Sf6#
- 1...Sc8
- 2.Rxe5#
- 1...Se8
- 2.Rxe5#
- threat
- 1.Bc7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 11
- Sets
- Q(c);N_GUARD::R1(D)
- Q(c);N_GUARD,P_PINP(A)::R1(D)
- Q(c);XR(D)::S(G),XQ(c)
- Q(c);N_GUARD,XS(G)::R1(D)
- R(a);N_GUARD::QAR1(H),XR(a)
- R(a);SBLOCK::QAR1(H)
- R(a);N_GUARD::S(G),XR(a)
- R(k);N_GUARD::S(F),XR(k)
- R(k);N_GUARD,N_SPINS(h),XB(J)::S(F)
- S(g);N_GUARD,N_SPINP(f),S_CUTB(j)::P(A)
- S(g);N_SPINS(h),S_CUTR(k)::S(F)
- Tries
- Try
- B(J);
- Threat
- DUALS(2)
- Vars
- S(g);N_SPINS(h),XB(J)::S(F)
- R(a);::S(F)
- B(j);N_SPINP(f)::S(F)
- S(g);::S(F)
- Refutation
- R(k);N_SPINS(h),XB(J)
- Try
- R(D);XQ(c)
- Threat
- DUALS(2)
- Vars
- B(j);XP(C)::R1(D)
- B(j);N_SPINS(h),XB(J)::S(G)
- P(d);XR(D)::S(G)
- R(a);N_GUARD::QAR1(H),XR(a)
- R(k);N_GUARD::S(F),XR(k)
- R(k);N_SPINP(f)::S(G)
- R(k);N_SPINS(h)::S(G)
- B(j);N_SPINP(f)::S(G)
- P(d);::S(G),XP(d)
- Refutation
- R(a);
- Try
- Actual
- B(I);
- Threat
- QAR1(H),XS(g)
- Vars
- Q(c);XR(D)::S(G),XQ(c)
- Q(c);N_GUARD,XS(G)::R1(D)
- R(a);XB(I)::S(G),XR(a)
- R(a);SBLOCK::QAR1(H)
- S(g);S_CUTR(a)::QAR1(H)
- S(g);::R1(E),XP(f)
- S(g);N_GUARD,N_SPINP(f),S_CUTB(j)::P(A)
- S(g);N_SPINS(h),S_CUTR(k)::S(F)
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).