MESON Chess Problem Database
Problem Display
PID: 9420 (8/K4p1B/1P3P1p/3Q2Pr/2R2qkp/7n/5p2/5Nr1 w - - 0 1)
Colpa, Johannes J
1st Prize, Tijdschrift vd NSB, 1902
#2
8 + 9
| 2638 | White to Play | 1913 |
SOLUTION
- SOUND
- Sets
- 1...Qxc4
- 2.Qf5#
- 1...Qd4
- 2.Qf5#
- 1...Qe4
- 2.Qf5#
- 1...Rxf1
- 2.Qg2#
- 1...Rh1
- 2.Qg2#
- 1...Rg2
- 2.Qxg2#
- 1...Rg3
- 2.Sh2#
- 1...Rxg5
- 2.Qd1#
- 1...Sxg5
- 2.Bf5#
- 1...hxg5
- 2.Bf5#
- 2.Qd1#
- 1...Qxc4
- Tries
- 1.Ka6?
- 1...Rxf1
- 2.Qg2#
- 1...Rxg5
- 2.Qd1#
- 1...Sxg5
- 2.Bf5#
- 1...hxg5
- 2.Bf5#
- 2.Qd1#
- 1...Qd4
- 2.Qf5#
- 1...Qe4
- 2.Qf5#
- 1...Rh1
- 2.Qg2#
- 1...Rg2
- 2.Qxg2#
- 1...Rg3
- 2.Sh2#
- 1...Qxc4+!
- 1...Rxf1
- 1.Kb7?
- 1...Qxc4
- 2.Qf5#
- 1...Rxf1
- 2.Qg2#
- 1...Rxg5
- 2.Qd1#
- 1...Sxg5
- 2.Bf5#
- 1...hxg5
- 2.Bf5#
- 2.Qd1#
- 1...Qd4
- 2.Qf5#
- 1...Rh1
- 2.Qg2#
- 1...Rg2
- 2.Qxg2#
- 1...Rg3
- 2.Sh2#
- 1...Qe4!
- 1...Qxc4
- 1.Ka8?
- 1...Qxc4
- 2.Qf5#
- 1...Rxf1
- 2.Qg2#
- 1...Rxg5
- 2.Qd1#
- 1...Sxg5
- 2.Bf5#
- 1...hxg5
- 2.Bf5#
- 2.Qd1#
- 1...Qd4
- 2.Qf5#
- 1...Rh1
- 2.Qg2#
- 1...Rg2
- 2.Qxg2#
- 1...Rg3
- 2.Sh2#
- 1...Qe4!
- 1...Qxc4
- 1.Bb1?
- 1...Qxc4
- 2.Qf5#
- 1...Rxf1
- 2.Qg2#
- 1...Rxg5
- 2.Qd1#
- 1...Sxg5
- 2.Bf5#
- 1...hxg5
- 2.Bf5#
- 2.Qd1#
- 1...Qd4
- 2.Qf5#
- 1...Rh1
- 2.Qg2#
- 1...Rg2
- 2.Qxg2#
- 1...Rg3
- 2.Sh2#
- 1...Qe4!
- 1...Qxc4
- 1.Bc2?
- threat
- 2.Bd1#
- 1...Qxc4
- 2.Qf5#
- 1...Rxf1
- 2.Qg2#
- 1...Sxg5
- 2.Bf5#
- 1...Qd4
- 2.Qf5#
- 1...Rg3
- 2.Sh2#
- 1...Qe4!
- threat
- 1.Bd3?
- threat
- 2.Be2#
- 1...Qxc4
- 2.Qf5#
- 1...Rxf1
- 2.Qg2#
- 1...Sxg5
- 2.Bf5#
- 1...Qd4
- 2.Qf5#
- 1...Rg3
- 2.Sh2#
- 1...Qe4!
- threat
- 1.Bg6?
- 1...Qxc4
- 2.Qf5#
- 1...Rxf1
- 2.Qg2#
- 1...Rxg5
- 2.Qd1#
- 1...Sxg5
- 2.Bf5#
- 1...hxg5
- 2.Bf5#
- 2.Qd1#
- 1...Qd4
- 2.Qf5#
- 1...Qe4
- 2.Qf5#
- 1...Rh1
- 2.Qg2#
- 1...Rg2
- 2.Qxg2#
- 1...Rg3
- 2.Sh2#
- 1...fxg6!
- 1...Qxc4
- 1.Ra4?
- 1...Rxf1
- 2.Qg2#
- 1...Rxg5
- 2.Qd1#
- 1...Sxg5
- 2.Bf5#
- 1...hxg5
- 2.Bf5#
- 2.Qd1#
- 1...Qb4
- 2.Qf5#
- 1...Qc4
- 2.Qf5#
- 1...Qd4
- 2.Qf5#
- 1...Qe4
- 2.Qf5#
- 1...Rh1
- 2.Qg2#
- 1...Rg2
- 2.Qxg2#
- 1...Rg3
- 2.Sh2#
- 1...Qxa4+!
- 1...Rxf1
- 1.Rd4?
- 1...Qxd4
- 2.Qf5#
- 1...Rxf1
- 2.Qg2#
- 1...Sxg5
- 2.Bf5#
- 1...hxg5
- 2.Bf5#
- 1...Qe4
- 2.Qf5#
- 1...Rh1
- 2.Qg2#
- 1...Rg2
- 2.Qxg2#
- 1...Rg3
- 2.Sh2#
- 1...Rxg5!
- 1...Qxd4
- 1.Rxf4+?
- 1...Kxf4
- 2.Qf5#
- 1...Sxf4!
- 1...Kxf4
- 1.b7?
- 1...Qxc4
- 2.Qf5#
- 1...Rxf1
- 2.Qg2#
- 1...Rxg5
- 2.Qd1#
- 1...Sxg5
- 2.Bf5#
- 1...hxg5
- 2.Bf5#
- 2.Qd1#
- 1...Qe4
- 2.Qf5#
- 1...Rh1
- 2.Qg2#
- 1...Rg2
- 2.Qxg2#
- 1...Rg3
- 2.Sh2#
- 1...Qd4+!
- 1...Qxc4
- 1.Ka6?
- Keys
- 1.Rb4!
- 1...Qxb4
- 2.Qf5#
- 1...Rxf1
- 2.Qg2#
- 1...Rxg5
- 2.Qd1#
- 1...Sxg5
- 2.Bf5#
- 1...hxg5
- 2.Bf5#
- 2.Qd1#
- 1...Qc4
- 2.Qf5#
- 1...Qd4
- 2.Qf5#
- 1...Qe4
- 2.Qf5#
- 1...Rh1
- 2.Qg2#
- 1...Rg2
- 2.Qxg2#
- 1...Rg3
- 2.Sh2#
- 1...Qxb4
- 1.Rb4!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- Q(d);N_SPINQ(d),XR(B)::QAB1(C)
- Q(d);P_PINP(E)::QAB1(C)
- Q(d);::QAB1(C)
- R(a);N_GUARD,XS(A)::QAR2(C)
- R(a);N_GUARD::QAR2(C)
- R(a);N_GUARD::QAR2(C),XR(a)
- R(a);SBLOCK::S(A)
- R(g);SBLOCK,XP(D)::QAB(C)
- S(c);SBLOCK,XP(D)::B(H)
- Tries
- Try
- K(G);P-FLIGHT
- Vars
- R(a);N_GUARD,XS(A)::QAR2(C)
- R(g);SBLOCK,XP(D)::QAB(C)
- S(c);SBLOCK,XP(D)::B(H)
- Q(d);::QAB1(C)
- R(a);N_GUARD::QAR2(C)
- R(a);N_GUARD::QAR2(C),XR(a)
- R(a);SBLOCK::S(A)
- Refutation
- Q(d);CHECK,N_SPINQ(d),XR(B)
- Try
- K(G);P-FLIGHT
- Vars
- Q(d);N_SPINQ(d),XR(B)::QAB1(C)
- R(a);N_GUARD,XS(A)::QAR2(C)
- R(g);SBLOCK,XP(D)::QAB(C)
- S(c);SBLOCK,XP(D)::B(H)
- Q(d);::QAB1(C)
- R(a);N_GUARD::QAR2(C)
- R(a);N_GUARD::QAR2(C),XR(a)
- R(a);SBLOCK::S(A)
- Refutation
- Q(d);P_PINQ(C)
- Try
- K(G);P-FLIGHT
- Vars
- Q(d);N_SPINQ(d),XR(B)::QAB1(C)
- R(a);N_GUARD,XS(A)::QAR2(C)
- R(g);SBLOCK,XP(D)::QAB(C)
- S(c);SBLOCK,XP(D)::B(H)
- Q(d);::QAB1(C)
- R(a);N_GUARD::QAR2(C)
- R(a);N_GUARD::QAR2(C),XR(a)
- R(a);SBLOCK::S(A)
- Refutation
- Q(d);P_PINQ(C)
- Try
- B(H);
- Vars
- Q(d);N_SPINQ(d),XR(B)::QAB1(C)
- R(a);N_GUARD,XS(A)::QAR2(C)
- R(g);SBLOCK,XP(D)::QAB(C)
- S(c);SBLOCK,XP(D)::B(H)
- Q(d);P_PINP(E)::QAB1(C)
- R(a);N_GUARD::QAR2(C)
- R(a);N_GUARD::QAR2(C),XR(a)
- R(a);SBLOCK::S(A)
- Refutation
- Q(d);
- Try
- B(H);
- Threat
- B(H)
- Vars
- Q(d);N_SPINQ(d),XR(B)::QAB1(C)
- R(a);N_GUARD,XS(A)::QAR2(C)
- S(c);SBLOCK,XP(D)::B(H)
- Q(d);P_PINP(E)::QAB1(C)
- R(a);SBLOCK::S(A)
- Refutation
- Q(d);
- Try
- B(H);
- Threat
- B(H)
- Vars
- Q(d);N_SPINQ(d),XR(B)::QAB1(C)
- R(a);N_GUARD,XS(A)::QAR2(C)
- S(c);SBLOCK,XP(D)::B(H)
- Q(d);P_PINP(E)::QAB1(C)
- R(a);SBLOCK::S(A)
- Refutation
- Q(d);
- Try
- B(H);
- Vars
- Q(d);N_SPINQ(d),XR(B)::QAB1(C)
- R(a);N_GUARD,XS(A)::QAR2(C)
- R(g);SBLOCK,XP(D)::QAB(C)
- S(c);SBLOCK,XP(D)::B(H)
- Q(d);P_PINP(E)::QAB1(C)
- Q(d);::QAB1(C)
- R(a);N_GUARD::QAR2(C)
- R(a);N_GUARD::QAR2(C),XR(a)
- R(a);SBLOCK::S(A)
- Refutation
- P(i);XB(H)
- Try
- R(B);
- Vars
- R(a);N_GUARD,XS(A)::QAR2(C)
- R(g);SBLOCK,XP(D)::QAB(C)
- S(c);SBLOCK,XP(D)::B(H)
- Q(d);::QAB1(C)
- Q(d);P_PINP(E)::QAB1(C)
- R(a);N_GUARD::QAR2(C)
- R(a);N_GUARD::QAR2(C),XR(a)
- R(a);SBLOCK::S(A)
- Refutation
- Q(d);CHECK,N_SPINQ(d),XR(B)
- Try
- R(B);
- Vars
- Q(d);N_SPINQ(d),P_PINP(E),XR(B)::QAB1(C)
- R(a);N_GUARD,XS(A)::QAR2(C)
- S(c);SBLOCK,XP(D)::B(H)
- P(h);SBLOCK,XP(D)::B(H)
- Q(d);::QAB1(C)
- R(a);N_GUARD::QAR2(C)
- R(a);N_GUARD::QAR2(C),XR(a)
- R(a);SBLOCK::S(A)
- Refutation
- R(g);XP(D)
- Try
- R(B);CHECK,XQ(d)
- Vars
- K(e);P-FLIGHT,XR(B)::QAR1(C)
- Refutation
- S(c);XR(B)
- Try
- P(E);
- Vars
- Q(d);N_SPINQ(d),XR(B)::QAB1(C)
- R(a);N_GUARD,XS(A)::QAR2(C)
- R(g);SBLOCK,XP(D)::QAB(C)
- S(c);SBLOCK,XP(D)::B(H)
- Q(d);::QAB1(C)
- R(a);N_GUARD::QAR2(C)
- R(a);N_GUARD::QAR2(C),XR(a)
- R(a);SBLOCK::S(A)
- Refutation
- Q(d);CHECK
- Try
- Actual
- R(B);
- Vars
- Q(d);N_SPINQ(d),XR(B)::QAB1(C)
- R(a);N_GUARD,XS(A)::QAR2(C)
- R(g);SBLOCK,XP(D)::QAB(C)
- S(c);SBLOCK,XP(D)::B(H)
- Q(d);::QAB1(C)
- Q(d);P_PINP(E)::QAB1(C)
- R(a);N_GUARD::QAR2(C)
- R(a);N_GUARD::QAR2(C),XR(a)
- R(a);SBLOCK::S(A)
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).