MESON Chess Problem Database
Problem Display
PID: 5077 (8/Q3B1Kp/8/3rNB2/5kP1/8/2nP2PP/8 w - - 0 1)
Colpa, Johannes J
4th Prize, Tijdschrift vd NSB JT, 1898
#2
9 + 4
SOLUTION
- SOUND
- Sets
- 1...Rd3
- 2.Sxd3#
- 1...Ra5
- 2.Sd3#
- 1...Rb5
- 2.Sd3#
- 1...Rc5
- 2.Sd3#
- 1...Rxe5
- 2.Qf2#
- 1...Sa1
- 2.Qe3#
- 1...Se1
- 2.Qe3#
- 1...Sa3
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sb4
- 2.Qe3#
- 1...Sd4
- 2.Sd3#
- 1...h5
- 2.Sg6#
- 1...h6
- 2.Sg6#
- 1...Rd3
- Tries
- 1.Kf6?
- threat
- 2.Qf2#
- 2.g3#
- 1...Rxd2
- 2.g3#
- 1...Rxe5
- 2.Qf2#
- 1...Rd3
- 2.Sxd3#
- 1...Rd4
- 2.g3#
- 1...Rc5
- 2.Sd3#
- 2.g3#
- 1...Se1
- 2.Qe3#
- 2.g3#
- 1...Se3
- 2.Qxe3#
- 2.dxe3#
- 2.g3#
- 1...Sd4
- 2.Sd3#
- 2.g3#
- 1...Rd6+!
- threat
- 1.Sf7?
- threat
- 2.Bg5#
- 2.Qf2#
- 1...Rxd2
- 2.Bg5#
- 1...Rd3
- 2.Bg5#
- 1...Rd4
- 2.Bg5#
- 1...Rc5
- 2.Bg5#
- 1...Se1
- 2.Bg5#
- 2.Qe3#
- 1...Se3
- 2.Bg5#
- 2.Qxe3#
- 2.dxe3#
- 1...Sd4
- 2.Bg5#
- 1...h6
- 2.Qf2#
- 1...Rxf5!
- threat
- 1.Bf6?
- threat
- 2.Qf2#
- 2.g3#
- 1...Rxd2
- 2.g3#
- 1...Rxe5
- 2.Qf2#
- 1...Rd3
- 2.Sxd3#
- 1...Rd4
- 2.g3#
- 1...Rc5
- 2.Sd3#
- 2.g3#
- 1...Se1
- 2.Qe3#
- 2.g3#
- 1...Se3
- 2.Qxe3#
- 2.dxe3#
- 2.g3#
- 1...Sd4
- 2.Sd3#
- 2.g3#
- 1...Rd7+!
- threat
- 1.Qd4+?
- 1...Sxd4
- 2.Sd3#
- 1...Rxd4!
- 1...Sxd4
- 1.Qa4+?
- 1...Kxe5
- 2.Qe4#
- 1...Rd4
- 2.Sd3#
- 1...Sd4
- 2.Sd3#
- 1...Sb4!
- 1...Kxe5
- 1.Kf6?
- Keys
- 1.Qc5!
- 1...Kxe5
- 2.Bd6#
- 1...Rxd2
- 2.g3#
- 1...Rxc5
- 2.Sd3#
- 1...Rxe5
- 2.Qf2#
- 1...Rd3
- 2.Sxd3#
- 1...Rd4
- 2.g3#
- 1...Rd6
- 2.g3#
- 1...Rd7
- 2.g3#
- 1...Rd8
- 2.g3#
- 1...Sa1
- 2.Qe3#
- 1...Se1
- 2.Qe3#
- 1...Sa3
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sb4
- 2.Qe3#
- 1...Sd4
- 2.Sd3#
- 1...h5
- 2.Sg6#
- 1...h6
- 2.Sg6#
- 1...Kxe5
- 1.Qc5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 2
- Sets
- R(c);N_GUARD::S(E),XR(c)
- R(c);N_GUARD::S(E)
- R(c);SBLOCK,XS(E)::QAR2(G)
- S(a);N_GUARD::QAB1(G)
- S(a);N_GUARD::QAB1(G),XS(a)
- S(a);S_CUTR(c)::S(E)
- P(d);N_GUARD::S(E)
- Tries
- Try
- K(I);S_FLIGHT
- Threat
- DUALS(2)
- Vars
- R(c);XP(A)::P(B)
- R(c);XS(E)::QAR2(G)
- R(c);N_GUARD::S(E),XR(c)
- R(c);::P(B)
- Refutation
- R(c);CHECK
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- R(c);XP(A)::B(H)
- R(c);::B(H)
- S(a);::B(H)
- P(d);::QAR2(G)
- Refutation
- R(c);XB(F)
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- R(c);XP(A)::P(B)
- R(c);XS(E)::QAR2(G)
- R(c);N_GUARD::S(E),XR(c)
- R(c);::P(B)
- Refutation
- R(c);CHECK
- Try
- Q(G);CHECK
- Vars
- S(a);XQ(G)::S(E)
- Refutation
- R(c);XQ(G)
- Try
- Q(G);CHECK
- Vars
- K(b);S_FLIGHT,XS(E)::QAR1(G)
- R(c);P_SPINR(c)::S(E)
- S(a);P_SPINS(a)::S(E)
- Refutation
- S(a);P_SPINS(a)
- Try
- Actual
- Q(G);
- Vars
- K(b);OGATEB,P_SPINR(c),S_FLIGHT,XS(E)::B(H)
- R(c);XP(A)::P(B)
- R(c);N_GUARD,XQ(G)::S(E)
- R(c);SBLOCK,XS(E)::QAR2(G)
- R(c);N_GUARD::S(E),XR(c)
- R(c);::P(B)
- R(c);P_PINB(H)::P(B)
- S(a);N_GUARD::QAB1(G)
- S(a);N_GUARD::QAB1(G),XS(a)
- S(a);S_CUTR(c)::S(E)
- P(d);N_GUARD::S(E)
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).