MESON Chess Problem Database
Problem Display
PID: 162711 (4NB1R/5kPq/2nP2p1/6p1/K2bQr1p/7N/6r1/1B3R2 w - - 0 1)
Thomas, Georg
Skakbladet, 1940
#2
10 + 9
| 2037 | Albrecht MT | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Qg8
- 2.Qxg6#
- 1...Qh5
- 2.g8Q#
- 1...Qh6
- 2.g8Q#
- 1...Rg1
- 2.Ba2#
- 1...Ra2+
- 2.Bxa2#
- 1...Rb2
- 2.Sxg5#
- 1...Rc2
- 2.Sxg5#
- 1...Rd2
- 2.Sxg5#
- 1...Re2
- 2.Sxg5#
- 1...Rgf2
- 2.Sxg5#
- 1...Rh2
- 2.Sxg5#
- 1...Rg4
- 2.Ba2#
- 1...Rff2
- 2.Ba2#
- 1...Bb2
- 2.Ba2#
- 1...Bf2
- 2.Ba2#
- 1...Sb4
- 2.Qe7#
- 1...Sa5
- 2.Qe7#
- 1...Sa7
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- 1...Sb8
- 2.Qe7#
- 1...Sd8
- 2.Qe7#
- 1...g4
- 2.Sg5#
- 1...Qg8
- Tries
- 1.Be7?
- threat
- 2.Rf8#
- 2.Qd5#
- 1...Ra2+
- 2.Bxa2#
- 1...Qxg7
- 2.Qd5#
- 1...Bxg7
- 2.Qc4#
- 1...Sxe7
- 2.Rf8#
- 2.Qxe7#
- 1...Qg8
- 2.Qxg6#
- 1...Be5
- 2.Qc4#
- 1...Se5
- 2.Qd5#
- 1...Re2
- 2.Sxg5#
- 2.Rf8#
- 1...Ba1
- 2.Rf8#
- 2.Qc4#
- 1...Bg1
- 2.Rf8#
- 2.Qc4#
- 1...Bb2
- 2.Ba2#
- 2.Rf8#
- 2.Qc4#
- 1...Bf2
- 2.Ba2#
- 2.Rf8#
- 1...Bc3
- 2.Rf8#
- 2.Qc4#
- 1...Be3
- 2.Rf8#
- 2.Qc4#
- 1...Bc5
- 2.Rf8#
- 2.Qc4#
- 1...Bb6
- 2.Rf8#
- 2.Qc4#
- 1...Bf6
- 2.Rf8#
- 1...Ba7
- 2.Rf8#
- 2.Qc4#
- 1...Sb4
- 2.Rf8#
- 1...Sd8
- 2.Rf8#
- 1...Qxh8!
- threat
- 1.Rxf4+?
- 1...Bf6
- 2.Rxf6#
- 1...gxf4!
- 1...Bf6
- 1.Be7?
- Keys
- 1.d7!
- threat
- 2.Qd5#
- 1...Ra2+
- 2.Bxa2#
- 1...Bxg7
- 2.Qc4#
- 1...Be5
- 2.Qc4#
- 1...Re2
- 2.Sxg5#
- 1...Ba1
- 2.Qc4#
- 1...Bg1
- 2.Qc4#
- 1...Bb2
- 2.Ba2#
- 2.Qc4#
- 1...Bf2
- 2.Ba2#
- 1...Bc3
- 2.Qc4#
- 1...Be3
- 2.Qc4#
- 1...Bc5
- 2.Qc4#
- 1...Bb6
- 2.Qc4#
- 1...Bf6
- 2.Sd6#
- 1...Ba7
- 2.Qc4#
- 1...Sb4
- 2.Qe7#
- 2.d8S#
- 1...Se7
- 2.Qxe7#
- 1...Sd8
- 2.Qe7#
- threat
- 1.d7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 10
- REMOVED MATES = 17
- Sets
- Q(i);N_GUARD::QAB1(E),XP(g)
- Q(i);N_GUARD::P=Q
- R(a);N_GUARD::B(A)
- R(a);CHECK,N_GUARD::B(A),XR(a)
- R(a);N_GUARD::S(C),XP(e)
- R(a);N_GUARD,N_SPINR(c)::S(C),XP(e)
- R(c);S_CUTR(a)::B(A)
- B(b);P_PINQ(E),S_CUTR(a)::B(A)
- B(b);N_SPINR(c),P_PINQ(E),S_CUTR(a)::B(A)
- S(f);N_GUARD::QAR1(E)
- S(f);N_GUARD::QAR1(E),XS(f)
- P(e);S_CUTR(a)::S(C)
- Tries
- Try
- B(I);
- Threat
- DUALS(2)
- Vars
- R(a);CHECK,N_GUARD::B(A),XR(a)
- Q(i);XP(G)::QAB(E)
- B(b);OGATE,P_PINQ(E),XP(G)::QAB(E)
- Q(i);N_GUARD::QAB1(E),XP(g)
- B(b);OGATE,P_PINQ(E)::QAB(E)
- S(f);::QAB(E)
- B(b);N_SPINR(c),P_PINQ(E)::R1(J)
- S(f);::R1(J)
- Refutation
- Q(i);XR(J)
- Try
- R(B);CHECK,XR(c)
- Vars
- B(b);N_GUARD,P_SPINB(b)::R1(B),XB(b)
- Refutation
- P(e);XR(B)
- Try
- Actual
- P(F);
- Threat
- QAB(E)
- Vars
- R(a);CHECK,N_GUARD::B(A),XR(a)
- B(b);OGATE,P_PINQ(E),XP(G)::QAB(E)
- B(b);OGATE,P_PINQ(E)::QAB(E)
- R(a);N_GUARD::S(C),XP(e)
- B(b);N_SPINR(c),P_PINQ(E),S_CUTR(a)::B(A)
- B(b);N_SPINR(c),P_PINQ(E),SBLOCK::S(H)
- S(f);N_GUARD::QAR1(E),XS(f)
- S(f);N_GUARD::QAR1(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).