MESON Chess Problem Database
Problem Display
PID: 162560 (rBQ5/b2r2p1/B3n2R/5k1N/1P5P/K2p1pqP/2N5/4R2n w - - 0 1)
Thomas, Georg
Skakbladet, 1939
#2
11 + 10
| 15601 | Albrecht-Leiss-Degener Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Qf2
- 2.Re5#
- 1...Qxh4
- 2.Re5#
- 1...Qe5
- 2.Rxe5#
- 1...Qg1
- 2.Re5#
- 1...Qg2
- 2.Re5#
- 1...Qg4
- 2.Re5#
- 1...Qg5
- 2.Re5#
- 1...Qg6
- 2.Re5#
- 1...Rd4
- 2.Qxe6#
- 1...Rd5
- 2.Qxe6#
- 1...Rb7
- 2.Bxd3#
- 2.Qxe6#
- 1...Rc7
- 2.Bxd3#
- 2.Qxe6#
- 1...Re7
- 2.Bxd3#
- 1...Rf7
- 2.Bxd3#
- 2.Qxe6#
- 1...Rd8
- 2.Qxe6#
- 1...Sf2
- 2.Sxg3#
- 1...Sd4
- 2.Bxd3#
- 1...Sf4
- 2.Re5#
- 1...Sc5
- 2.Sd4#
- 1...Sg5
- 2.Sxg7#
- 1...Sc7
- 2.Bxd3#
- 1...Sd8
- 2.Bxd3#
- 1...Sf8
- 2.Bxd3#
- 1...g5
- 2.Rf6#
- 1...Qf2
- Tries
- 1.Sd4+?
- 1...Rxd4
- 2.Qxe6#
- 1...Sxd4
- 2.Bxd3#
- 1...Bxd4!
- 1...Rxd4
- 1.Sxg7+?
- 1...Rxg7
- 2.Bxd3#
- 2.Qxe6#
- 1...Sxg7
- 2.Bxd3#
- 1...Qxg7!
- 1...Rxg7
- 1.Qxd7?
- threat
- 2.Bxd3#
- 2.Qxe6#
- 2.Qxd3#
- 2.Qf7#
- 1...Qxh4
- 2.Re5#
- 2.Qd5#
- 1...Qxh3
- 2.Qxe6#
- 1...Bxb8
- 2.Sd4#
- 2.Qxe6#
- 2.Qxd3#
- 2.Qf7#
- 1...dxc2
- 2.Bd3#
- 2.Qxe6#
- 2.Qd3#
- 2.Qf7#
- 1...Be3
- 2.Qxe6#
- 2.Qxd3#
- 1...Qf4
- 2.Sxg7#
- 2.Qxe6#
- 2.Qf7#
- 1...Qe5
- 2.Rxe5#
- 1...Qd6
- 2.Qf7#
- 1...Qc7
- 2.Bxd3#
- 2.Qxe6#
- 2.Qxd3#
- 1...Qg4
- 2.Re5#
- 2.Qxe6#
- 2.Qd5#
- 2.Qf7#
- 1...Qg5
- 2.Bxd3#
- 2.Re5#
- 2.Qxe6#
- 2.Qxd3#
- 2.Qd5#
- 1...Qg6
- 2.Bxd3#
- 2.Re5#
- 2.Qxd3#
- 2.Qd5#
- 1...Bg1
- 2.Qxe6#
- 2.Qxd3#
- 2.Qf7#
- 1...Bf2
- 2.Qxe6#
- 2.Qxd3#
- 2.Qf7#
- 1...Bd4
- 2.Sxd4#
- 2.Qxe6#
- 1...Bc5
- 2.Qxe6#
- 2.Qxd3#
- 2.Qf7#
- 1...Bb6
- 2.Qxe6#
- 2.Qxd3#
- 2.Qf7#
- 1...Sf2
- 2.Sxg3#
- 2.Qxe6#
- 2.Qf7#
- 1...d2
- 2.Bd3#
- 2.Qxe6#
- 2.Qd3#
- 2.Qf7#
- 1...f2
- 2.Qxe6#
- 2.Qf7#
- 1...Qxe1!
- threat
- 1.Qc4?
- threat
- 2.Qxe6#
- 2.Qe4#
- 1...Qxe1
- 2.Qg4#
- 1...Qxh4
- 2.Re5#
- 1...Qf4
- 2.Qxe6#
- 1...Qe5
- 2.Rxe5#
- 2.Qg4#
- 1...Qd6
- 2.Qe4#
- 2.Qg4#
- 1...Qg4
- 2.Re5#
- 2.Qxe6#
- 2.Qxg4#
- 2.hxg4#
- 1...Qg6
- 2.Re5#
- 2.Qe4#
- 1...Rd4
- 2.Qxe6#
- 1...Rd5
- 2.Qe4#
- 1...Rd6
- 2.Qe4#
- 1...Re7
- 2.Qxd3#
- 2.Qe4#
- 1...Be3
- 2.Sxe3#
- 2.Qxe6#
- 1...Bd4
- 2.Qxd3#
- 2.Qxe6#
- 1...Sf2
- 2.Sxg3#
- 2.Qxe6#
- 1...Sd4
- 2.Qxd3#
- 1...Sf4
- 2.Re5#
- 2.Qe4#
- 1...Sc5
- 2.Se3#
- 1...Sc7
- 2.Qe4#
- 1...Sd8
- 2.Qe4#
- 1...Sf8
- 2.Qe4#
- 1...Sg5!
- threat
- 1.Qc6?
- threat
- 2.Qe4#
- 2.Qxe6#
- 1...Qxh4
- 2.Re5#
- 1...Qf4
- 2.Qxe6#
- 1...Qe5
- 2.Rxe5#
- 1...Qd6
- 2.Qe4#
- 1...Qg4
- 2.Re5#
- 2.Qxe6#
- 1...Qg6
- 2.Re5#
- 2.Qe4#
- 1...Rd4
- 2.Se3#
- 2.Qxe6#
- 1...Rd5
- 2.Qxe6#
- 1...Rd6
- 2.Qe4#
- 1...Re7
- 2.Bxd3#
- 2.Qe4#
- 1...Be3
- 2.Sxe3#
- 2.Qxe6#
- 1...Sf2
- 2.Sxg3#
- 2.Qxe6#
- 1...Sd4
- 2.Se3#
- 2.Bxd3#
- 2.Qe4#
- 1...Sf4
- 2.Re5#
- 2.Qe4#
- 1...Sc5
- 2.Se3#
- 1...Sg5
- 2.Qg6#
- 1...Sc7
- 2.Qe4#
- 1...Sd8
- 2.Qe4#
- 1...Sf8
- 2.Qe4#
- 1...Qxe1!
- threat
- 1.Qf8+?
- 1...Rf7
- 2.Bxd3#
- 2.Qxf7#
- 1...Sxf8!
- 1...Rf7
- 1.Sd4+?
- Keys
- 1.Qe8!
- threat
- 2.Qxe6#
- 1...Qxe1
- 2.Qg6#
- 1...Qxh4
- 2.Re5#
- 2.Qg6#
- 1...Qe5
- 2.Rxe5#
- 2.Qg6#
- 1...Qd6
- 2.Qg6#
- 1...Qg6
- 2.Re5#
- 2.Qxg6#
- 1...Rd6
- 2.Qf7#
- 1...Re7
- 2.Bxd3#
- 1...Sd4
- 2.Se3#
- 2.Bxd3#
- 2.Qe4#
- 1...Sf4
- 2.Re5#
- 2.Qe4#
- 2.Qe5#
- 1...Sc5
- 2.Se3#
- 1...Sg5
- 2.Qg6#
- 1...Sc7
- 2.Qe4#
- 1...Sd8
- 2.Qe4#
- 1...Sf8
- 2.Qe4#
- threat
- 1.Qe8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 5
- ADDED MATES = 3
- REMOVED MATES = 15
- Sets
- Q(d);N_GUARD::R1(A)
- Q(d);N_GUARD,XP(F)::R1(A)
- Q(d);N_GUARD::R1(A),XQ(d)
- R(h);OGATE,P_SPINS(f)::QAB1(K),XS(f)
- R(h);N_GUARD,P_SPINS(f)::B(H),XP(b)
- S(a);N_GUARD::S(G),XQ(d)
- S(f);P_SPINR(h)::B(H),XP(b)
- S(f);P_SPINR(h),S_CUTQ(d)::R1(A)
- S(f);N_GUARD,P_SPINR(h),S_CUTB(g)::S(B)
- S(f);N_GUARD,P_SPINR(h),S_CUTQ(d)::S(G),XP(i)
- P(i);N_GUARD::R1(I)
- Tries
- Try
- S(B);CHECK
- Vars
- R(h);OGATE,P_SPINS(f),XS(B)::QAB1(K),XS(f)
- S(f);P_SPINR(h),XS(B)::B(H),XP(b)
- Refutation
- B(g);P_PINB(H),XS(B)
- Try
- S(G);CHECK,XP(i)
- Vars
- S(f);P_SPINR(h),XS(G)::B(H),XP(b)
- Refutation
- Q(d);XS(G)
- Try
- Q(K);P_PINS(f),XR(h)
- Threat
- DUALS(4)
- Vars
- Q(d);XP(D)::QAB1(K),XS(f)
- Q(d);N_GUARD::R1(A),XQ(d)
- Q(d);P_PINP(E)::QAR2(K)
- Refutation
- Q(d);XR(A)
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- Q(d);N_GUARD,XR(A)::QAB1(K)
- Q(d);N_GUARD,XP(F)::R1(A)
- Q(d);::QAB1(K),XS(f)
- R(h);::QAB1(K),XS(f)
- R(h);::QAB1(K)
- S(f);S_CUTR(h)::QAB(K),XP(b)
- S(f);S_CUTB(g)::S(B)
- S(f);::QAB1(K)
- Refutation
- S(f);
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- Q(d);N_GUARD,XP(F)::R1(A)
- Q(d);::QAB1(K),XS(f)
- Q(d);N_GUARD::R1(A),XQ(d)
- Q(d);P_PINP(E)::QAB1(K)
- R(h);::QAB1(K),XS(f)
- R(h);::QAB1(K)
- S(f);S_CUTB(g)::S(B)
- S(f);OGATE::QAB1(K)
- S(f);::QAB1(K)
- Refutation
- Q(d);XR(A)
- Try
- Q(K);CHECK
- Refutation
- S(f);XQ(K)
- Try
- Actual
- Q(K);
- Threat
- QAB1(K),XS(f)
- Vars
- Q(d);N_GUARD,XR(A)::QAB1(K)
- Q(d);N_GUARD,P_PINP(E)::QAB1(K)
- R(h);N_GUARD::QAR2(K)
- R(h);N_GUARD::B(H),XP(b)
- S(f);S_CUTB(g)::S(B)
- S(f);S_CUTQ(d)::QAB1(K)
- S(f);OGATE::QAB1(K)
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).