MESON Chess Problem Database
Problem Display
PID: 89823 (6BB/KR3p1q/p3n3/4Q2R/2k2n2/p1Np4/2rp4/2b5 w - - 0 1)
Grzankowski, Waclaw
Die Schwalbe, 1939
#2
7 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rxc3
- 2.Qxc3#
- 1...Se2
- 2.Qd5#
- 1...Sg2
- 2.Qd5#
- 1...Sh3
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sxh5
- 2.Qd5#
- 1...Sg6
- 2.Qd5#
- 1...Sd4
- 2.Qxd4#
- 2.Qc5#
- 1...Sc5
- 2.Qd4#
- 2.Qxc5#
- 1...Sg5
- 2.Qd4#
- 2.Qc7#
- 1...Sc7
- 2.Qd4#
- 2.Qxc7#
- 2.Qc5#
- 1...Sg7
- 2.Qc5#
- 1...Sd8
- 2.Qd4#
- 2.Qc5#
- 1...Sf8
- 2.Qd4#
- 2.Qc7#
- 2.Qc5#
- 1...a5
- 2.Qb5#
- 1...f5
- 2.Qd4#
- 1...f6
- 2.Qc5#
- 1...Rxc3
- Tries
- 1.Sd1?
- threat
- 2.Se3#
- 1...Sd5
- 2.Qxd5#
- 1...Sg2
- 2.Qd5#
- 1...Sd4
- 2.Qxd4#
- 2.Qc5#
- 1...Qe4!
- threat
- 1.Se4?
- threat
- 2.Sd6#
- 1...Sd5
- 2.Qxd5#
- 1...Sd4
- 2.Qxd4#
- 2.Qc5#
- 1...Qxe4!
- threat
- 1.Bxf7?
- threat
- 2.Qd4#
- 2.Qc7#
- 2.Qc5#
- 1...Qxh5
- 2.Qd4#
- 1...Qxh8
- 2.Qc5#
- 1...Sxh5
- 2.Bxe6#
- 2.Qd4#
- 2.Qc7#
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Qe4
- 2.Qxe4#
- 2.Qc5#
- 1...Qf5
- 2.Qd4#
- 1...Qg7
- 2.Qc5#
- 1...Se2
- 2.Bxe6#
- 2.Qc7#
- 2.Qc5#
- 2.Qd5#
- 2.Qxe6#
- 1...Qxf7!
- threat
- 1.Qd6?
- threat
- 2.Rb4#
- 2.Qb4#
- 2.Qxa6#
- 1...Qxh5
- 2.Rb4#
- 2.Qb4#
- 1...Qxh8
- 2.Qb4#
- 1...Sxh5
- 2.Rb4#
- 2.Qb4#
- 2.Qd5#
- 1...Qg7
- 2.Qb4#
- 1...Sd4
- 2.Rc5#
- 2.Qb4#
- 2.Qc5#
- 2.Qxd4#
- 1...Sg7
- 2.Rc5#
- 2.Qb4#
- 2.Qc5#
- 1...f6
- 2.Rc5#
- 2.Qb4#
- 2.Qc5#
- 1...Qf5
- 2.Rb4#
- 2.Qb4#
- 1...Sd5
- 2.Qxd5#
- 1...Sc5
- 2.Rxc5#
- 2.Qxc5#
- 2.Qd4#
- 1...Sg5
- 2.Rb4#
- 2.Qb4#
- 2.Qc7#
- 2.Qd4#
- 2.Qc6#
- 1...Sc7
- 2.Rc5#
- 2.Rb4#
- 2.Qb4#
- 2.Qc5#
- 2.Qxc7#
- 2.Qd4#
- 2.Qc6#
- 1...a5
- 2.Qa6#
- 1...f5
- 2.Qb4#
- 2.Qd4#
- 2.Qc6#
- 1...Rb2!
- threat
- 1.Qc7+?
- 1...Sc5
- 2.Rxc5#
- 2.Qxc5#
- 1...Sxc7!
- 1...Sc5
- 1.Qe4+?
- 1...Sd4
- 2.Qxd4#
- 1...Qxe4!
- 1...Sd4
- 1.Qa5?
- threat
- 2.Rb4#
- 2.Qb4#
- 2.Qa4#
- 2.Qxa6#
- 1...Qxh5
- 2.Rb4#
- 2.Qb4#
- 1...Qxh8
- 2.Qb4#
- 1...Sxh5
- 2.Rb4#
- 2.Qb4#
- 2.Qd5#
- 1...Qg7
- 2.Qb4#
- 1...Sg7
- 2.Qb4#
- 2.Qc5#
- 1...f6
- 2.Qb4#
- 2.Qc5#
- 1...Qf5
- 2.Rb4#
- 2.Qb4#
- 1...Sd5
- 2.Qxd5#
- 1...Sd4
- 2.Rc5#
- 2.Qb4#
- 2.Qc5#
- 1...Sc5
- 2.Rxc5#
- 2.Rb4#
- 2.Qb4#
- 2.Qxc5#
- 1...Sg5
- 2.Rb4#
- 2.Qb4#
- 2.Qc7#
- 1...Sc7
- 2.Rc5#
- 2.Rb4#
- 2.Qb4#
- 2.Qxc7#
- 2.Qa4#
- 2.Qc5#
- 1...f5
- 2.Qb4#
- 1...Rb2!
- threat
- 1.Sd1?
- Keys
- 1.Sa2!
- threat
- 2.Rb4#
- 1...Rxa2
- 2.Qc3#
- 1...Sd5
- 2.Qxd5#
- 1...Rb2
- 2.Qc3#
- 1...a5
- 2.Qb5#
- 1...f5
- 2.Qd4#
- 1...f6
- 2.Qc5#
- threat
- 1.Sa2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 7
- Sets
- R(b);OGATE,XS(A)::QAR1(B),XR(b)
- S(g);N_GUARD::QAB1(B)
- S(g);N_GUARD::QAB1(B),XS(g)
- S(g);N_GUARD,XR(C)::QAB1(B)
- S(i);N_GUARD,P_SPINP(j)::QAR1(B)
- P(h);N_GUARD::QAB1(B)
- P(j);P_PINR(E),P_SPINS(i)::QAR1(B)
- Tries
- Try
- S(A);
- Threat
- S(A)
- Vars
- S(g);N_GUARD::QAB1(B),XS(g)
- S(g);N_GUARD::QAB1(B)
- Refutation
- Q(k);
- Try
- S(A);
- Threat
- S(A)
- Vars
- S(g);N_GUARD::QAB1(B),XS(g)
- Refutation
- Q(k);XS(A)
- Try
- B(F);P_PINS(i),XP(j)
- Threat
- DUALS(3)
- Vars
- Q(k);XR(C)::QAR1(B)
- Q(k);XB(G)::QAR1(B)
- S(g);N_GUARD,N_SPINS(i)::QAB1(B),XS(g)
- Q(k);::QAR1(B)
- Refutation
- Q(k);N_SPINS(i),P_PINR(E),XB(F)
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- Q(k);XB(G)::QAR1(B)
- Q(k);::QAR1(B)
- S(g);N_GUARD::QAB1(B),XS(g)
- P(h);::QAB(B)
- Refutation
- R(b);
- Try
- Q(B);CHECK
- Refutation
- S(i);P_SPINP(j),XQ(B)
- Try
- Q(B);CHECK
- Vars
- S(i);N_GUARD,P_SPINP(j),P_SPINS(i)::QAR1(B),XS(i)
- Refutation
- Q(k);XQ(B)
- Try
- Q(B);
- Threat
- DUALS(4)
- Vars
- Q(k);XB(G)::QAR1(B)
- Q(k);::QAR1(B)
- S(g);N_GUARD::QAB1(B),XS(g)
- P(j);P_PINR(E),P_SPINS(i)::QAR1(B)
- Refutation
- R(b);
- Try
- Actual
- S(A);
- Threat
- R1(E)
- Vars
- R(b);N_GUARD,XS(A)::QAR1(B)
- S(g);N_GUARD::QAB1(B),XS(g)
- R(b);N_GUARD::QAR1(B)
- P(h);N_GUARD::QAB1(B)
- P(j);P_PINR(E),P_SPINS(i)::QAR1(B)
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).