MESON Chess Problem Database
Problem Display
PID: 178986 (1K6/8/1p6/1n4p1/prp1Q1Rp/p1kN3p/P1p3nR/2B5 w - - 0 1)
Swane, Jan Arnold Willem
4th HM., Magasinet, 1953
#2
7 + 12
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Qxc4#
- 1...Rb2
- 2.Qxc4#
- 1...Rb3
- 2.Qxc4#
- 1...Se1
- 2.Bd2#
- 1...Se3
- 2.Bd2#
- 1...Sf4
- 2.Bd2#
- 1...Sd4
- 2.Qxd4#
- 1...Sd6
- 2.Qd4#
- 1...Sa7
- 2.Qd4#
- 1...Sc7
- 2.Qd4#
- 1...cxd3
- 2.Qxb4#
- 1...Rb1
- Tries
- 1.Kb7?
- 1...cxd3
- 2.Qxb4#
- 1...Rb1
- 2.Qxc4#
- 1...Rb2
- 2.Qxc4#
- 1...Rb3
- 2.Qxc4#
- 1...Se1
- 2.Bd2#
- 1...Se3
- 2.Bd2#
- 1...Sf4
- 2.Bd2#
- 1...Sd4
- 2.Qxd4#
- 1...Sa7
- 2.Qd4#
- 1...Sc7
- 2.Qd4#
- 1...Sd6+!
- 1...cxd3
- 1.Ka8?
- 1...cxd3
- 2.Qxb4#
- 1...Rb1
- 2.Qxc4#
- 1...Rb2
- 2.Qxc4#
- 1...Rb3
- 2.Qxc4#
- 1...Se1
- 2.Bd2#
- 1...Se3
- 2.Bd2#
- 1...Sf4
- 2.Bd2#
- 1...Sd4
- 2.Qxd4#
- 1...Sd6
- 2.Qd4#
- 1...Sa7
- 2.Qd4#
- 1...Sc7+!
- 1...cxd3
- 1.Se1?
- threat
- 2.Qxc2#
- 1...Rb1
- 2.Qxc4#
- 1...Rb2
- 2.Qxc4#
- 1...Rb3
- 2.Qxc4#
- 1...Se3
- 2.Qxe3#
- 1...Sf4
- 2.Rxc2#
- 1...Sd4
- 2.Qxd4#
- 1...Sxe1!
- threat
- 1.Sb2?
- 1...Rxb2
- 2.Qxc4#
- 1...Rb3
- 2.Qxc4#
- 1...Se1
- 2.Qxe1#
- 1...Se3
- 2.Qxe3#
- 1...Sf4
- 2.Rxc2#
- 1...Sd4
- 2.Qxd4#
- 1...Sd6
- 2.Qd4#
- 2.Qe5#
- 1...Sa7
- 2.Qd4#
- 2.Qe5#
- 1...Sc7
- 2.Qd4#
- 2.Qe5#
- 1...axb2!
- 1...Rxb2
- 1.Sf2?
- 1...Rb1
- 2.Qxc4#
- 1...Rb2
- 2.Qxc4#
- 1...Rb3
- 2.Qxc4#
- 1...Se1
- 2.Qxe1#
- 1...Se3
- 2.Qxe3#
- 1...Sd4
- 2.Qxd4#
- 1...Sd6
- 2.Qd4#
- 2.Qe5#
- 1...Sa7
- 2.Qd4#
- 2.Qe5#
- 1...Sc7
- 2.Qd4#
- 2.Qe5#
- 1...Sf4!
- 1...Rb1
- 1.Sf4?
- threat
- 2.Se2#
- 2.Sd5#
- 1...Sxf4
- 2.Rxc2#
- 1...Rb1
- 2.Sd5#
- 1...Rb2
- 2.Sd5#
- 1...Rb3
- 2.Sd5#
- 1...Se3
- 2.Se2#
- 2.Qxe3#
- 1...Sd4
- 2.Sd5#
- 1...Sc7
- 2.Se2#
- 2.Qe5#
- 1...gxf4!
- threat
- 1.Sc5?
- 1...Rb1
- 2.Qxc4#
- 1...Rb2
- 2.Qxc4#
- 1...Rb3
- 2.Qxc4#
- 1...Se1
- 2.Qxe1#
- 1...Se3
- 2.Qxe3#
- 1...Sf4
- 2.Rxc2#
- 1...Sd4
- 2.Qxd4#
- 1...Sd6
- 2.Qd4#
- 2.Qe5#
- 1...Sa7
- 2.Qd4#
- 2.Qe5#
- 1...Sc7
- 2.Qd4#
- 2.Qe5#
- 1...bxc5!
- 1...Rb1
- 1.Rhxg2?
- threat
- 2.Bd2#
- 1...cxd3
- 2.Qxb4#
- 1...hxg2!
- threat
- 1.Rxh3?
- 1...cxd3
- 2.Rxd3#
- 2.Qxd3#
- 2.Qxb4#
- 1...Rb1
- 2.Qxc4#
- 1...Rb2
- 2.Qxc4#
- 1...Rb3
- 2.Qxc4#
- 1...Se1
- 2.Sxe1#
- 2.Qxe1#
- 1...Sf4
- 2.Sxf4#
- 1...Sd4
- 2.Qxd4#
- 1...Sd6
- 2.Qd4#
- 2.Qe5#
- 1...Sa7
- 2.Qd4#
- 2.Qe5#
- 1...Sc7
- 2.Qd4#
- 2.Qe5#
- 1...Se3!
- 1...cxd3
- 1.Qxg2?
- threat
- 2.Qxc2#
- 2.Qd2#
- 1...Kxd3
- 2.Rxh3#
- 2.Qf3#
- 2.Qxh3#
- 2.Qxc2#
- 2.Qd2#
- 1...cxd3
- 2.Qd2#
- 1...Rb2
- 2.Qd2#
- 1...Sd4
- 2.Qd2#
- 1...hxg2!
- threat
- 1.Qd5?
- 1...Sd4
- 2.Qxd4#
- 1...Se3
- 2.Bd2#
- 1...Rb1
- 2.Rxc4#
- 2.Qxc4#
- 1...Rb2
- 2.Rxc4#
- 2.Qxc4#
- 1...Rb3
- 2.Rxc4#
- 2.Qxc4#
- 1...Se1
- 2.Bd2#
- 1...Sf4
- 2.Bd2#
- 1...Sd6
- 2.Qd4#
- 1...Sa7
- 2.Qd4#
- 1...Sc7
- 2.Qd4#
- 1...cxd3!
- 1...Sd4
- 1.Qe1+?
- 1...Kxd3
- 2.Qd2#
- 1...Sxe1!
- 1...Kxd3
- 1.Qe2?
- threat
- 2.Bd2#
- 2.Qd2#
- 1...cxd3
- 2.Qd2#
- 1...Sf4!
- threat
- 1.Qe3?
- threat
- 2.Bd2#
- 2.Qd2#
- 1...cxd3
- 2.Qd2#
- 1...Sf4
- 2.Sxf4#
- 2.Bd2#
- 1...Sxe3!
- threat
- 1.Qe5+?
- 1...Sd4
- 2.Qxd4#
- 1...Kxd3!
- 1...Sd4
- 1.Kb7?
- Keys
- 1.Se5!
- 1...Rb1
- 2.Qxc4#
- 1...Rb2
- 2.Qxc4#
- 1...Rb3
- 2.Qxc4#
- 1...Se1
- 2.Qxe1#
- 1...Se3
- 2.Qxe3#
- 1...Sf4
- 2.Rxc2#
- 1...Sd4
- 2.Qxd4#
- 1...Sd6
- 2.Qd4#
- 1...Sa7
- 2.Qd4#
- 1...Sc7
- 2.Qd4#
- 1...Rb1
- 1.Se5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 3
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- R(g);N_GUARD::QAR1(E),XP(h)
- S(b);::B(A)
- S(j);N_GUARD::QAB1(E),XS(j)
- S(j);N_GUARD::QAB1(E)
- P(h);OGATE,SBLOCK,XS(D)::QAB1(E),XR(g)
- Tries
- Try
- K(G);P-FLIGHT
- Vars
- P(h);OGATE,SBLOCK,XS(D)::QAB1(E),XR(g)
- R(g);N_GUARD::QAR1(E),XP(h)
- S(b);::B(A)
- S(j);N_GUARD::QAB1(E),XS(j)
- S(j);N_GUARD::QAB1(E)
- Refutation
- S(j);CHECK
- Try
- K(G);P-FLIGHT
- Vars
- P(h);OGATE,SBLOCK,XS(D)::QAB1(E),XR(g)
- R(g);N_GUARD::QAR1(E),XP(h)
- S(b);::B(A)
- S(j);N_GUARD::QAB1(E),XS(j)
- S(j);N_GUARD::QAB1(E)
- Refutation
- S(j);CHECK
- Try
- S(D);
- Threat
- QAR1(E),XP(a)
- Vars
- R(g);N_GUARD::QAR1(E),XP(h)
- S(b);N_GUARD::QAR2(E),XS(b)
- S(b);OGATE::R1(C),XP(a)
- S(j);N_GUARD::QAB1(E),XS(j)
- Refutation
- S(b);XS(D)
- Try
- S(D);
- Vars
- R(g);N_GUARD,XS(D)::QAR1(E),XP(h)
- R(g);N_GUARD::QAR1(E),XP(h)
- S(b);N_GUARD::QAB(E),XS(b)
- S(b);N_GUARD::QAR2(E),XS(b)
- S(b);OGATE::R1(C),XP(a)
- S(j);N_GUARD::QAB1(E),XS(j)
- Refutation
- P(c);XS(D)
- Try
- S(D);
- Vars
- R(g);N_GUARD::QAR1(E),XP(h)
- S(b);N_GUARD::QAB(E),XS(b)
- S(b);N_GUARD::QAR2(E),XS(b)
- S(j);N_GUARD::QAB1(E),XS(j)
- Refutation
- S(b);
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- S(b);OGATE,XS(D)::R1(C),XP(a)
- R(g);::S(D)
- S(j);::S(D)
- Refutation
- P(k);XS(D)
- Try
- S(D);
- Vars
- R(g);N_GUARD::QAR1(E),XP(h)
- S(b);N_GUARD::QAB(E),XS(b)
- S(b);N_GUARD::QAR2(E),XS(b)
- S(b);OGATE::R1(C),XP(a)
- S(j);N_GUARD::QAB1(E),XS(j)
- Refutation
- P(l);XS(D)
- Try
- R(C);XS(b)
- Threat
- B(A)
- Vars
- P(h);OGATE,SBLOCK,XS(D)::QAB1(E),XR(g)
- Refutation
- P(e);XR(C)
- Try
- R(C);XP(e)
- Vars
- R(g);N_GUARD::QAR1(E),XP(h)
- S(b);N_GUARD::R(C)+S(D),XS(b)
- S(j);N_GUARD::QAB1(E),XS(j)
- Refutation
- S(b);
- Try
- Q(E);XS(b)
- Threat
- DUALS(2)
- Vars
- P(h);XS(D)::QAB1(E)
- R(g);::QAB1(E)
- S(j);::QAB1(E)
- Refutation
- P(e);XQ(E)
- Try
- Q(E);
- Vars
- S(j);N_GUARD::QAB1(E),XS(j)
- S(b);::B(A)
- S(j);N_GUARD::QAB1(E)
- Refutation
- P(h);XS(D)
- Try
- Q(E);CHECK
- Vars
- K(d);P-FLIGHT,XS(D)::QAR1(E)
- Refutation
- S(b);XQ(E)
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- P(h);XS(D)::QAB1(E)
- Refutation
- S(b);
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- P(h);P_SPINP(h),XS(D)::QAB1(E)
- Refutation
- S(b);XQ(E)
- Try
- Q(E);CHECK
- Vars
- S(j);N_GUARD,P_SPINS(j)::QAB1(E),XS(j)
- Refutation
- K(d);P-FLIGHT,XS(D)
- Try
- Actual
- S(D);
- Vars
- R(g);N_GUARD::QAR1(E),XP(h)
- S(b);N_GUARD::QAB(E),XS(b)
- S(b);N_GUARD::QAR2(E),XS(b)
- S(b);OGATE::R1(C),XP(a)
- S(j);N_GUARD::QAB1(E),XS(j)
- S(j);N_GUARD::QAB1(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).