MESON Chess Problem Database
Problem Display
PID: 17656 (8/p2p4/R2P4/2pk4/nPN4p/1pP2P1B/1Np3p1/2K3Q1 w - - 0 1)
Hartong, Jan
Parallele 50, 1948
#2
10 + 9
SOLUTION
- SOUND
- Sets
- 1...Sxb2
- 2.Qxc5#
- 1...Sxc3
- 2.Qxc5#
- 1...Sb6
- 2.Qxc5#
- 1...cxb4
- 2.Qd4#
- 1...Sxb2
- Tries
- 1.Sd2?
- 1...Sxb2
- 2.Qxc5#
- 1...Sxc3
- 2.Qxc5#
- 1...cxb4
- 2.Qd4#
- 1...Sb6
- 2.Qxc5#
- 1...c4
- 2.Qd4#
- 1...Ke5!
- 1...Sxb2
- 1.Sa3?
- 1...Sxb2
- 2.Qxc5#
- 1...Sxc3
- 2.Qxc5#
- 1...cxb4
- 2.Qd4#
- 1...Sb6
- 2.Qxc5#
- 1...c4
- 2.Qd4#
- 1...Ke5!
- 1...Sxb2
- 1.Sa5?
- 1...Sxb2
- 2.Qxc5#
- 1...Sxc3
- 2.Qxc5#
- 1...cxb4
- 2.Qd4#
- 1...Sb6
- 2.Qxc5#
- 1...c4
- 2.Qd4#
- 1...Ke5!
- 1...Sxb2
- 1.Se5?
- 1...Sxb2
- 2.Qxc5#
- 1...Sxc3
- 2.Qxc5#
- 1...cxb4
- 2.Qd4#
- 1...Sb6
- 2.Qxc5#
- 1...c4
- 2.Qd4#
- 1...Kxe5!
- 1...Sxb2
- 1.Bg4?
- 1...Sxb2
- 2.Qxc5#
- 1...Sxc3
- 2.Qxc5#
- 1...cxb4
- 2.Qd4#
- 1...Sb6
- 2.Qxc5#
- 1...h3!
- 1...Sxb2
- 1.Bf5?
- 1...Sxb2
- 2.Qxc5#
- 1...Sxc3
- 2.Qxc5#
- 1...cxb4
- 2.Qd4#
- 1...Sb6
- 2.Qxc5#
- 1...h3!
- 1...Sxb2
- 1.Bxd7?
- 1...Sxb2
- 2.Qxc5#
- 1...Sxc3
- 2.Qxc5#
- 1...cxb4
- 2.Qd4#
- 1...Sb6
- 2.Qxc5#
- 1...h3!
- 1...Sxb2
- 1.Sd2?
- Keys
- 1.Qxg2!
- threat
- 2.Qd2#
- 2.Qg5#
- 2.Qg8#
- 2.f4#
- 1...Sxb2
- 2.Qg8#
- 1...Sxc3
- 2.Qd2#
- 1...cxb4
- 2.Qg5#
- 1...Sb6
- 2.f4#
- threat
- 1.Qxg2!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 4
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- S(d);N_GUARD,XS(C)::QAR1(B),XP(f)
- S(d);N_GUARD,XP(D)::QAR1(B),XP(f)
- S(d);N_GUARD::QAR1(B),XP(f)
- P(f);N_GUARD,XP(G)::QAR1(B)
- Tries
- Try
- S(H);
- Vars
- S(d);N_GUARD,XS(C)::QAR1(B),XP(f)
- S(d);N_GUARD,XP(D)::QAR1(B),XP(f)
- P(f);N_GUARD,XP(G)::QAR1(B)
- S(d);N_GUARD::QAR1(B),XP(f)
- P(f);N_GUARD::QAR1(B)
- Refutation
- K(g);P-FLIGHT
- Try
- S(H);
- Vars
- S(d);N_GUARD,XS(C)::QAR1(B),XP(f)
- S(d);N_GUARD,XP(D)::QAR1(B),XP(f)
- P(f);N_GUARD,XP(G)::QAR1(B)
- S(d);N_GUARD::QAR1(B),XP(f)
- P(f);N_GUARD::QAR1(B)
- Refutation
- K(g);P-FLIGHT
- Try
- S(H);
- Vars
- S(d);N_GUARD,XS(C)::QAR1(B),XP(f)
- S(d);N_GUARD,XP(D)::QAR1(B),XP(f)
- P(f);N_GUARD,XP(G)::QAR1(B)
- S(d);N_GUARD::QAR1(B),XP(f)
- P(f);N_GUARD::QAR1(B)
- Refutation
- K(g);P-FLIGHT
- Try
- S(H);
- Vars
- S(d);N_GUARD,XS(C)::QAR1(B),XP(f)
- S(d);N_GUARD,XP(D)::QAR1(B),XP(f)
- P(f);N_GUARD,XP(G)::QAR1(B)
- S(d);N_GUARD::QAR1(B),XP(f)
- P(f);N_GUARD::QAR1(B)
- Refutation
- K(g);P-FLIGHT,XS(H)
- Try
- B(F);
- Vars
- S(d);N_GUARD,XS(C)::QAR1(B),XP(f)
- S(d);N_GUARD,XP(D)::QAR1(B),XP(f)
- P(f);N_GUARD,XP(G)::QAR1(B)
- S(d);N_GUARD::QAR1(B),XP(f)
- Refutation
- P(e);
- Try
- B(F);
- Vars
- S(d);N_GUARD,XS(C)::QAR1(B),XP(f)
- S(d);N_GUARD,XP(D)::QAR1(B),XP(f)
- P(f);N_GUARD,XP(G)::QAR1(B)
- S(d);N_GUARD::QAR1(B),XP(f)
- Refutation
- P(e);
- Try
- B(F);XP(i)
- Vars
- S(d);N_GUARD,XS(C)::QAR1(B),XP(f)
- S(d);N_GUARD,XP(D)::QAR1(B),XP(f)
- P(f);N_GUARD,XP(G)::QAR1(B)
- S(d);N_GUARD::QAR1(B),XP(f)
- Refutation
- P(e);
- Try
- Actual
- Q(B);XP(b)
- Threat
- DUALS(4)
- Vars
- S(d);XS(C)::QAB(B)
- S(d);XP(D)::QAR(B)
- P(f);XP(G)::QAR(B)
- S(d);::QAB(B)+P(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).