MESON Chess Problem Database
Problem Display
PID: 270862 (3NRrkr/Q3Bn1p/4n2p/6pN/8/1B6/b7/b4KR1 w - - 0 1)
Ekestubbe, Gustav Adolf
Schackvarlden, 1942
#2
8 + 10
| 15601 | Albrecht-Leiss-Degener Collection | 2023 |
SOLUTION
- SOUND
- Sets
- 1...Sd4
- 2.Rxf8#
- 1...Sf4
- 2.Rxf8#
- 1...Sc5
- 2.Rxf8#
- 1...Sc7
- 2.Rxf8#
- 1...Sg7
- 2.Rxf8#
- 1...Sexd8
- 2.Rxf8#
- 1...Se5+
- 2.Rxf8#
- 1...Sd6+
- 2.Rxf8#
- 1...Sfxd8+
- 2.Rxf8#
- 1...Sd4
- Tries
- 1.Ba3?
- threat
- 2.Qxf7#
- 1...Se5+
- 2.Sf6#
- 2.Rxf8#
- 1...Sfxd8+
- 2.Rxf8#
- 1...Sexd8
- 2.Rxf8#
- 1...Sc7
- 2.Rxf8#
- 1...Sd6+!
- threat
- 1.Bb4?
- threat
- 2.Qxf7#
- 1...Se5+
- 2.Sf6#
- 2.Rxf8#
- 1...Sfxd8+
- 2.Rxf8#
- 1...Sexd8
- 2.Rxf8#
- 1...Sc7
- 2.Rxf8#
- 1...Sd6+!
- threat
- 1.Bc5?
- threat
- 2.Qxf7#
- 1...Se5+
- 2.Sf6#
- 2.Rxf8#
- 1...Sfxd8+
- 2.Rxf8#
- 1...Sexd8
- 2.Rxf8#
- 1...Sc7
- 2.Rxf8#
- 1...Sd6+!
- threat
- 1.Bd6?
- threat
- 2.Qxf7#
- 1...Se5+
- 2.Sf6#
- 2.Rxf8#
- 1...Sfxd8+
- 2.Rxf8#
- 1...Sexd8
- 2.Rxf8#
- 1...Sc7
- 2.Rxf8#
- 1...Sxd6+!
- threat
- 1.Bxf8?
- threat
- 2.Qxf7#
- 1...Sexd8
- 2.Ba3#
- 2.Bb4#
- 2.Bc5#
- 2.Bd6#
- 2.Bxh6#
- 2.Be7#
- 2.Bg7#
- 1...Sfxd8
- 2.Ba3#
- 2.Bb4#
- 2.Bc5#
- 2.Bd6#
- 2.Bxh6#
- 2.Bg7#
- 1...Se5
- 2.Sf6#
- 2.Ba3#
- 2.Bb4#
- 2.Bc5#
- 2.Bd6#
- 2.Bxh6#
- 2.Be7#
- 2.Bg7#
- 2.Qg7#
- 1...Sd6
- 2.Bxd6#
- 1...Sc7!
- threat
- 1.Rxg5+?
- 1...Bg7
- 2.Sf6#
- 1...Sexg5
- 2.Rxf8#
- 1...Sg7
- 2.Rxf8#
- 1...Sfxg5+
- 2.Rxf8#
- 1...hxg5!
- 1...Bg7
- 1.Qf2?
- threat
- 2.Qxf7#
- 1...Sexd8
- 2.Rxf8#
- 1...Sfxd8
- 2.Rxf8#
- 2.Qxf8#
- 1...Sf4
- 2.Rxf8#
- 1...Se5
- 2.Rxf8#
- 2.Qxf8#
- 1...Sd6
- 2.Rxf8#
- 2.Qxf8#
- 1...Bf6!
- threat
- 1.Ba3?
- Keys
- 1.Bxg5!
- threat
- 2.Qxf7#
- 1...Se5+
- 2.Sf6#
- 1...Sfxg5+
- 2.Qf7#
- 1...Sd6+
- 2.Bf6#
- 1...Sfxd8+
- 2.Bf6#
- 1...Sexd8
- 2.Bf6#
- 1...Sc7
- 2.Bf6#
- threat
- 1.Bxg5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 5
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- S(d);N_GUARD,P_SPINS(f)::R1(H),XR(h)
- S(d);N_GUARD,N_SPINP(c),P_SPINS(f)::R1(H),XR(h)
- S(d);N_GUARD,P_SPINS(f),XS(G)::R1(H),XR(h)
- S(f);CHECK,P_SPINS(d)::R1(H),XR(h)
- S(f);CHECK,P_SPINS(d),XS(G)::R1(H),XR(h)
- Tries
- Try
- B(F);
- Threat
- QAB1(E),XS(f)
- Vars
- S(f);CHECK,P_SPINS(d),XS(G)::R1(H),XR(h)
- S(d);N_GUARD,P_SPINS(f),XS(G)::R1(H),XR(h)
- S(d);N_GUARD,P_SPINS(f)::R1(H),XR(h)
- Refutation
- S(f);CHECK,P_SPINS(d)
- Try
- B(F);
- Threat
- QAB1(E),XS(f)
- Vars
- S(f);CHECK,P_SPINS(d),XS(G)::R1(H),XR(h)
- S(d);N_GUARD,P_SPINS(f),XS(G)::R1(H),XR(h)
- S(d);N_GUARD,P_SPINS(f)::R1(H),XR(h)
- Refutation
- S(f);CHECK,P_SPINS(d)
- Try
- B(F);
- Threat
- QAB1(E),XS(f)
- Vars
- S(f);CHECK,P_SPINS(d),XS(G)::R1(H),XR(h)
- S(d);N_GUARD,P_SPINS(f),XS(G)::R1(H),XR(h)
- S(d);N_GUARD,P_SPINS(f)::R1(H),XR(h)
- Refutation
- S(f);CHECK,P_SPINS(d)
- Try
- B(F);
- Threat
- QAB1(E),XS(f)
- Vars
- S(f);CHECK,P_SPINS(d),XS(G)::R1(H),XR(h)
- S(d);N_GUARD,P_SPINS(f),XS(G)::R1(H),XR(h)
- S(d);N_GUARD,P_SPINS(f)::R1(H),XR(h)
- Refutation
- S(f);CHECK,P_SPINS(d),XB(F)
- Try
- B(F);XR(h)
- Threat
- QAB1(E),XS(f)
- Vars
- S(f);P_SPINS(d)::R(H)+B(F),XS(f)
- Refutation
- S(d);P_SPINS(f)
- Try
- R(B);CHECK,XP(c)
- Vars
- B(a);P_SPINB(a)::S(D)
- S(d);P_SPINS(f),XR(B)::R1(H),XR(h)
- S(d);P_SPINS(f)::R1(H),XR(h)
- S(f);CHECK,P_SPINS(d),XR(B)::R1(H),XR(h)
- Refutation
- P(e);XR(B)
- Try
- Q(E);
- Threat
- QAB1(E),XS(f)
- Vars
- S(d);N_GUARD,P_SPINS(f),XS(G)::R1(H),XR(h)
- S(d);N_GUARD,P_SPINS(f)::R1(H),XR(h)
- Refutation
- B(a);
- Try
- Actual
- B(F);XP(c)
- Threat
- QAB1(E),XS(f)
- Vars
- S(f);CHECK,P_SPINS(d),S_CUTB(a)::S(D)
- S(f);CHECK,P_SPINS(f),XB(F)::QAB1(E)
- S(f);CHECK,N_GUARD,P_SPINS(d)::R(B)+B(F)
- S(f);CHECK,N_GUARD,P_SPINS(d),XS(G)::R(B)+B(F)
- S(d);N_GUARD,P_SPINS(f),XS(G)::R(B)+B(F)
- S(d);N_GUARD,P_SPINS(f)::R(B)+B(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).