MESON Chess Problem Database
Problem Display
PID: 189491 (2N1B3/pn3p2/N4Kp1/p2k1p2/5RQ1/3r3p/1nP1P2P/8 w - - 0 1)
Erlin, Konrad (AKA Erlinger, Konrad)
Vasarnapi Ujsag, 1911
#2
9 + 10
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Rd1
- 2.Qf3#
- 1...Rd2
- 2.Qf3#
- 1...Ra3
- 2.Rd4#
- 1...Rb3
- 2.Rd4#
- 1...Rc3
- 2.Rd4#
- 1...Re3
- 2.Rd4#
- 1...Rf3
- 2.Rd4#
- 2.Qxf3#
- 1...Rg3
- 2.Rd4#
- 1...Rd4
- 2.Rxd4#
- 1...Sd1
- 2.c4#
- 1...Sa4
- 2.c4#
- 1...Sc5
- 2.Sc7#
- 1...Sd6
- 2.Se7#
- 1...g5
- 2.Rxf5#
- 2.Qxf5#
- 1...Rd1
- Tries
- 1.Rc4?
- threat
- 2.Sc7#
- 2.Bc6#
- 2.Bxf7#
- 1...fxg4
- 2.Bxf7#
- 1...Rd4
- 2.Bxf7#
- 2.Rxd4#
- 2.Qxd4#
- 1...f4
- 2.Bxf7#
- 1...Re3
- 2.Sc7#
- 2.Bc6#
- 2.Rd4#
- 2.Qd4#
- 1...Sc5
- 2.Sc7#
- 2.Rxc5#
- 1...Sd6
- 2.Sc7#
- 2.Se7#
- 2.Bc6#
- 2.Rc5#
- 1...Sd8
- 2.Sc7#
- 2.Rc5#
- 1...Sxc4!
- threat
- 1.Qg1?
- threat
- 2.Sc7#
- 1...Rd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Rc3
- 2.Rd4#
- 2.Qd4#
- 1...Re3!
- threat
- 1.Qg2+?
- 1...Rf3
- 2.Qxf3#
- 1...hxg2!
- 1...Rf3
- 1.cxd3?
- threat
- 2.Rd4#
- 2.Qf3#
- 1...Sc5
- 2.Sc7#
- 2.Rd4#
- 1...Sd6
- 2.Se7#
- 2.Rd4#
- 1...fxg4!
- threat
- 1.exd3?
- threat
- 2.Rd4#
- 2.Qf3#
- 1...Sc5
- 2.Sc7#
- 2.Rd4#
- 1...Sd6
- 2.Se7#
- 2.Rd4#
- 1...fxg4!
- threat
- 1.e3?
- threat
- 2.Qf3#
- 1...Rxe3
- 2.Rd4#
- 1...Rd4
- 2.Rxd4#
- 1...Sc5
- 2.Sc7#
- 1...Sd6
- 2.Se7#
- 1...fxg4!
- threat
- 1.Rc4?
- Keys
- 1.Ra4!
- 1...Sxa4
- 2.c4#
- 1...fxg4
- 2.e4#
- 1...Sc4
- 2.Qxc4#
- 1...Rd1
- 2.Qf3#
- 1...Rd2
- 2.Qf3#
- 1...Ra3
- 2.Rd4#
- 2.Qd4#
- 1...Rb3
- 2.Rd4#
- 2.Qd4#
- 1...Rc3
- 2.Rd4#
- 2.Qd4#
- 1...Re3
- 2.Rd4#
- 2.Qd4#
- 1...Rf3
- 2.Rd4#
- 2.Qxf3#
- 2.Qd4#
- 1...Rg3
- 2.Rd4#
- 2.Qd4#
- 1...Rd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Sd1
- 2.Qc4#
- 2.c4#
- 1...Sc5
- 2.Sc7#
- 1...Sd6
- 2.Se7#
- 1...Sd8
- 2.Rxa5#
- 1...f4
- 2.Qg5#
- 1...g5
- 2.Qxf5#
- 1...Sxa4
- 1.Ra4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 7
- Sets
- R(b);N_GUARD::QAB(E)
- R(b);N_GUARD::R1(D)
- R(b);N_GUARD::R1(D),XR(b)
- S(a);N_GUARD::P(A)
- S(i);SBLOCK::S(F)
- S(i);SBLOCK::S(H)
- Tries
- Try
- R(D);
- Threat
- DUALS(3)
- Vars
- P(f);XQ(E)::B(I),XP(j)
- P(f);::B(I),XP(j)
- Refutation
- S(a);XR(D)
- Try
- Q(E);
- Threat
- S(F)
- Refutation
- R(b);
- Try
- Q(E);CHECK
- Vars
- R(b);N_GUARD,P_SPINR(b)::QAB(E),XR(b)
- Refutation
- P(c);XQ(E)
- Try
- P(A);XR(b)
- Threat
- DUALS(2)
- Refutation
- P(f);XQ(E)
- Try
- P(B);XR(b)
- Threat
- DUALS(2)
- Refutation
- P(f);XQ(E)
- Try
- P(B);
- Threat
- QAB(E)
- Vars
- R(b);N_GUARD,XP(B)::R1(D)
- R(b);N_GUARD::R1(D),XR(b)
- S(i);SBLOCK::S(F)
- S(i);SBLOCK::S(H)
- Refutation
- P(f);XQ(E)
- Try
- Actual
- R(D);
- Vars
- S(a);N_GUARD,XR(D)::P(A)
- P(f);N_GUARD,XQ(E)::P(B)
- S(a);N_GUARD::QAB1(E),XS(a)
- R(b);N_GUARD::QAB(E)
- S(i);SBLOCK::S(F)
- S(i);SBLOCK::S(H)
- S(i);N_GUARD::R(D),XP(d)
- P(f);OGATEB::QAR(E)
- P(g);N_GUARD::QAR2(E),XP(f)
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).