MESON Chess Problem Database
Problem Display
PID: 201597 (2q5/5np1/b2B4/n2B3Q/1N1kN2P/R2P1P2/2P1K3/8 w - - 0 1)
Feenstra Kuiper, Pieter
Leidsch Dagblad, 1922
#2
11 + 6
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qh3
- 2.Bc5#
- 2.c3#
- 1...Qg4
- 2.Bc5#
- 2.c3#
- 1...Qf5
- 2.c3#
- 1...Qe6
- 2.Bc5#
- 2.c3#
- 1...Qb7
- 2.Bc5#
- 2.c3#
- 1...Qd7
- 2.Bc5#
- 2.c3#
- 1...Qxc2+
- 2.Sxc2#
- 1...Qc5
- 2.Bxc5#
- 1...Qa8
- 2.Bc5#
- 2.c3#
- 1...Qb8
- 2.Bc5#
- 2.c3#
- 1...Qd8
- 2.Bc5#
- 2.c3#
- 1...Qe8
- 2.Bc5#
- 2.c3#
- 1...Qf8
- 2.c3#
- 1...Qg8
- 2.Bc5#
- 2.c3#
- 1...Qh8
- 2.Bc5#
- 2.c3#
- 1...Bxd3+
- 2.Rxd3#
- 1...Bc4
- 2.c3#
- 1...Sc4
- 2.c3#
- 1...Sc6
- 2.Bc5#
- 2.c3#
- 1...Se5
- 2.Bxe5#
- 2.Qxe5#
- 1...Sh6
- 2.Be5#
- 2.Qe5#
- 1...Sd8
- 2.Be5#
- 2.Qe5#
- 1...Sh8
- 2.Be5#
- 2.Qe5#
- 1...Qh3
- Tries
- 1.Sc6+?
- 1...Sxc6
- 2.Bc5#
- 2.c3#
- 1...Qxc6!
- 1...Sxc6
- 1.Bc4?
- threat
- 2.Qd5#
- 2.c3#
- 1...Bxc4
- 2.c3#
- 1...Qf5
- 2.c3#
- 1...Qe6
- 2.Bc5#
- 2.Qc5#
- 2.c3#
- 1...Qb7
- 2.Bc5#
- 2.Qc5#
- 2.c3#
- 1...Qc5
- 2.Bxc5#
- 2.Qxc5#
- 2.c3#
- 1...Qc6
- 2.c3#
- 1...Qa8
- 2.Bc5#
- 2.Qc5#
- 2.c3#
- 1...Bb7
- 2.c3#
- 1...Se5
- 2.Bxe5#
- 2.Qxe5#
- 2.c3#
- 1...Sg5
- 2.c3#
- 1...g5
- 2.c3#
- 1...Qxc4!
- threat
- 1.Bxf7?
- threat
- 2.Be5#
- 2.Qd5#
- 2.Qe5#
- 1...Qxc2+
- 2.Sxc2#
- 1...Bxd3+
- 2.Rxd3#
- 1...Qc4
- 2.Be5#
- 2.Qe5#
- 1...Qf5
- 2.c3#
- 1...Qe6
- 2.Bc5#
- 2.Qc5#
- 2.c3#
- 1...Qb7
- 2.Bc5#
- 2.Be5#
- 2.Qc5#
- 2.Qe5#
- 2.c3#
- 1...Qc5
- 2.Bxc5#
- 2.Qxc5#
- 1...Qc6
- 2.Be5#
- 2.Qe5#
- 1...Qc7
- 2.Qd5#
- 2.Qe5#
- 1...Qa8
- 2.Bc5#
- 2.Be5#
- 2.Qc5#
- 2.Qe5#
- 2.c3#
- 1...Qb8
- 2.Bc5#
- 2.Qc5#
- 2.Qd5#
- 2.Qe5#
- 2.c3#
- 1...Qe8
- 2.Bc5#
- 2.Qc5#
- 2.Qd5#
- 2.c3#
- 1...Bc4
- 2.Be5#
- 2.Qe5#
- 2.c3#
- 1...Bb7
- 2.Be5#
- 2.Qe5#
- 1...Sc4
- 2.Qd5#
- 2.c3#
- 1...Sc6
- 2.Bc5#
- 2.Qc5#
- 2.Qd5#
- 2.c3#
- 1...g5!
- threat
- 1.Bc7?
- threat
- 2.c3#
- 1...Bxd3+
- 2.Rxd3#
- 1...Qxc7!
- threat
- 1.Qg6?
- threat
- 2.Qg1#
- 1...Bxd3+
- 2.Rxd3#
- 1...Sxd6
- 2.Qxg7#
- 1...Qg4
- 2.c3#
- 1...Sc4
- 2.c3#
- 1...Sg5
- 2.Qxg7#
- 1...Qxc2+!
- threat
- 1.Qxf7?
- threat
- 2.Qxg7#
- 1...Qxc2+
- 2.Sxc2#
- 1...Bxd3+
- 2.Rxd3#
- 1...Qg4
- 2.Qa7#
- 2.c3#
- 1...Qf5
- 2.Qa7#
- 2.c3#
- 1...Qe6
- 2.Qa7#
- 2.c3#
- 1...Qb7
- 2.c3#
- 1...Qd7
- 2.c3#
- 1...Qd8
- 2.c3#
- 1...Qe8
- 2.Qa7#
- 2.c3#
- 1...Qf8
- 2.Qa7#
- 2.c3#
- 1...Qg8
- 2.Qa7#
- 2.c3#
- 1...Qh8
- 2.Qa7#
- 2.c3#
- 1...Sc4
- 2.c3#
- 1...Sc6
- 2.c3#
- 1...g5
- 2.Qf6#
- 2.Qg7#
- 1...g6
- 2.Qf6#
- 2.Qg7#
- 1...Qc7!
- threat
- 1.Qg5?
- threat
- 2.Qe3#
- 2.Qg1#
- 1...Qxc2+
- 2.Sxc2#
- 1...Bxd3+
- 2.Rxd3#
- 1...Sxd6
- 2.Qxg7#
- 1...Qg4
- 2.Bc5#
- 2.Qe3#
- 2.c3#
- 1...Sc4
- 2.c3#
- 1...Sxg5!
- threat
- 1.Sc6+?
- Keys
- 1.Qg4!
- threat
- 2.Qg1#
- 1...Qxc2+
- 2.Sd2#
- 1...Bxd3+
- 2.Rxd3#
- 1...Qxg4
- 2.c3#
- 1...Sxd6
- 2.Qxg7#
- 1...Sc4
- 2.c3#
- threat
- 1.Qg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 4
- Sets
- Q(f);N_GUARD::P(A)
- Q(f);CHECK,XP(A)::S(F),XQ(f)
- Q(f);N_GUARD::B(K),XQ(f)
- B(c);CHECK,OGATE,XP(D)::R1(C),XB(c)
- B(c);S_CUTQ(f)::P(A)
- S(b);N_PINP(D),S_CUTQ(f)::P(A)
- Tries
- Try
- S(F);CHECK
- Refutation
- Q(f);XS(F)
- Try
- B(I);N_SPINP(D)
- Threat
- DUALS(2)
- Vars
- B(c);P_PINP(D),XB(I)::P(A)
- Q(f);::P(A)
- B(c);::P(A)
- S(d);::P(A)
- P(e);::P(A)
- Refutation
- Q(f);P_PINP(D),XB(I)
- Try
- B(I);XS(d)
- Threat
- DUALS(3)
- Vars
- Q(f);CHECK,XP(A)::S(F),XQ(f)
- B(c);CHECK,OGATE,XP(D)::R1(C),XB(c)
- Q(f);N_GUARD::P(A)
- Refutation
- P(e);
- Try
- B(K);
- Threat
- P(A)
- Vars
- B(c);CHECK,OGATE,XP(D)::R1(C),XB(c)
- Refutation
- Q(f);XB(K)
- Try
- Q(J);
- Threat
- QAB(J)
- Vars
- B(c);CHECK,OGATE,XP(D)::R1(C),XB(c)
- S(d);N_GUARD,XB(K)::QAB(J),XP(e)
- Q(f);N_GUARD::P(A)
- S(b);N_PINP(D),S_CUTQ(f)::P(A)
- S(d);N_GUARD::QAB(J),XP(e)
- Refutation
- Q(f);CHECK,XP(A)
- Try
- Q(J);XS(d)
- Threat
- QAB(J),XP(e)
- Vars
- Q(f);CHECK,XP(A)::S(F),XQ(f)
- B(c);CHECK,OGATE,XP(D)::R1(C),XB(c)
- Q(f);N_GUARD::P(A)
- S(b);N_PINP(D),S_CUTQ(f)::P(A)
- S(b);S_CUTQ(f)::P(A)
- Refutation
- Q(f);
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- Q(f);CHECK,XP(A)::S(F),XQ(f)
- B(c);CHECK,OGATE,XP(D)::R1(C),XB(c)
- S(d);N_GUARD,XB(K)::QAB(J),XP(e)
- S(b);N_PINP(D),S_CUTQ(f)::P(A)
- Refutation
- S(d);XQ(J)
- Try
- Actual
- Q(J);
- Threat
- QAB(J)
- Vars
- Q(f);CHECK,N_GUARD,XP(A)::QAR(J)+S(G)
- B(c);CHECK,OGATE,XP(D)::R1(C),XB(c)
- Q(f);N_GUARD,XQ(J)::P(A)
- S(d);N_GUARD,XB(K)::QAB(J),XP(e)
- S(b);N_PINP(D),S_CUTQ(f)::P(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).