MESON Chess Problem Database
Problem Display
PID: 17518 (3R2Bb/1p2k2r/1B3nQ1/3pr1pN/3Pp1p1/4K1N1/8/8 w - - 0 1)
Fleck, Ferenc
2nd Place, Magyar Sakkvilag, 1947
#2
8 + 10
SOLUTION
- SOUND
- Sets
- 1...Rf5
- 2.Sxf5#
- 1...Re6
- 2.Sf5#
- 1...Rxh5
- 2.Qf7#
- 1...Rh6
- 2.Qf7#
- 1...Rf7
- 2.Qxf7#
- 1...Rg7
- 2.Qxf6#
- 1...Bg7
- 2.Qf7#
- 1...Sxh5
- 2.Qd6#
- 1...Sd7
- 2.Re8#
- 1...Se8
- 2.Qxe8#
- 1...Sxg8
- 2.Qe8#
- 1...Rf5
- Tries
- 1.Kd2?
- 1...Rxh5
- 2.Qf7#
- 1...Sxh5
- 2.Qd6#
- 1...Sxg8
- 2.Qe8#
- 1...Rf7
- 2.Qxf7#
- 1...Se8
- 2.Qxe8#
- 1...Rf5
- 2.Sxf5#
- 1...Re6
- 2.Sf5#
- 1...Rh6
- 2.Qf7#
- 1...Rg7
- 2.Qxf6#
- 1...Bg7
- 2.Qf7#
- 1...Sd7
- 2.Re8#
- 1...e3+!
- 1...Rxh5
- 1.Ke2?
- 1...Rxh5
- 2.Qf7#
- 1...Sxh5
- 2.Qd6#
- 1...Sxg8
- 2.Qe8#
- 1...Rf7
- 2.Qxf7#
- 1...Se8
- 2.Qxe8#
- 1...Rf5
- 2.Sxf5#
- 1...Re6
- 2.Sf5#
- 1...Rh6
- 2.Qf7#
- 1...Rg7
- 2.Qxf6#
- 1...Bg7
- 2.Qf7#
- 1...Sd7
- 2.Re8#
- 1...e3!
- 1...Rxh5
- 1.Kf2?
- 1...Rf5+
- 2.Sxf5#
- 1...Rxh5
- 2.Qf7#
- 1...Sxh5
- 2.Qd6#
- 1...Sxg8
- 2.Qe8#
- 1...Rf7
- 2.Qxf7#
- 1...Se8
- 2.Qxe8#
- 1...Re6
- 2.Sf5#
- 1...Rh6
- 2.Qf7#
- 1...Rg7
- 2.Qxf6#
- 1...Bg7
- 2.Qf7#
- 1...Sd7
- 2.Re8#
- 1...e3+!
- 1...Rf5+
- 1.Sxf6?
- 1...Bxf6
- 2.Qe8#
- 1...Rf7
- 2.Qxf7#
- 1...Rf5
- 2.Sxf5#
- 1...Re6
- 2.Sf5#
- 2.Sxd5#
- 1...Rh1
- 2.Qf7#
- 1...Rh2
- 2.Qf7#
- 1...Rh3
- 2.Qf7#
- 1...Rh4
- 2.Qf7#
- 1...Rh5
- 2.Qf7#
- 1...Rh6
- 2.Qf7#
- 1...Bg7
- 2.Qf7#
- 1...Rg7!
- 1...Bxf6
- 1.Qxh7+?
- 1...Bg7
- 2.Qxg7#
- 1...Sxh7!
- 1...Bg7
- 1.dxe5?
- threat
- 2.Sf5#
- 1...Rf7
- 2.Qxf7#
- 1...Se8
- 2.Qxe8#
- 1...d4+!
- threat
- 1.Kd2?
- Keys
- 1.Qf5!
- threat
- 2.Qxe5#
- 1...Rxf5
- 2.Sxf5#
- 1...Sxh5
- 2.Qf8#
- 1...Sxg8
- 2.Qd7#
- 1...Sd7
- 2.Qxd7#
- 1...Re6
- 2.Qxe6#
- 1...Se8
- 2.Rd7#
- threat
- 1.Qf5!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 5
- ADDED MATES = 0
- REMOVED MATES = 5
- Sets
- R(d);N_GUARD::S(B),XR(d)
- R(d);N_GUARD::S(B)
- R(i);N_GUARD,XS(D)::QAR1(F)
- R(i);N_GUARD::QAR1(F)
- R(i);N_GUARD::QAR1(F),XR(i)
- R(i);S_CUTB(j)::QAB1(F),XS(f)
- B(j);S_CUTR(i)::QAR1(F)
- S(f);OGATE,XS(D)::QAB1(F)
- S(f);N_GUARD,SBLOCK::R1(G)
- S(f);N_GUARD::QAR1(F),XS(f)
- S(f);N_GUARD,XB(H)::QAR1(F)
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- R(i);N_GUARD,XS(D)::QAR1(F)
- S(f);OGATE,XS(D)::QAB1(F)
- S(f);N_GUARD,XB(H)::QAR1(F)
- R(i);N_GUARD::QAR1(F),XR(i)
- S(f);N_GUARD::QAR1(F),XS(f)
- R(d);N_GUARD::S(B),XR(d)
- R(d);N_GUARD::S(B)
- R(i);N_GUARD::QAR1(F)
- R(i);S_CUTB(j)::QAB1(F),XS(f)
- B(j);S_CUTR(i)::QAR1(F)
- S(f);N_GUARD,SBLOCK::R1(G)
- Refutation
- P(a);CHECK
- Try
- K(A);P-FLIGHT
- Vars
- R(i);N_GUARD,XS(D)::QAR1(F)
- S(f);OGATE,XS(D)::QAB1(F)
- S(f);N_GUARD,XB(H)::QAR1(F)
- R(i);N_GUARD::QAR1(F),XR(i)
- S(f);N_GUARD::QAR1(F),XS(f)
- R(d);N_GUARD::S(B),XR(d)
- R(d);N_GUARD::S(B)
- R(i);N_GUARD::QAR1(F)
- R(i);S_CUTB(j)::QAB1(F),XS(f)
- B(j);S_CUTR(i)::QAR1(F)
- S(f);N_GUARD,SBLOCK::R1(G)
- Refutation
- P(a);
- Try
- K(A);S_FLIGHT
- Vars
- R(d);CHECK,N_GUARD::S(B),XR(d)
- R(i);N_GUARD,XS(D)::QAR1(F)
- S(f);OGATE,XS(D)::QAB1(F)
- S(f);N_GUARD,XB(H)::QAR1(F)
- R(i);N_GUARD::QAR1(F),XR(i)
- S(f);N_GUARD::QAR1(F),XS(f)
- R(d);N_GUARD::S(B)
- R(i);N_GUARD::QAR1(F)
- R(i);S_CUTB(j)::QAB1(F),XS(f)
- B(j);S_CUTR(i)::QAR1(F)
- S(f);N_GUARD,SBLOCK::R1(G)
- Refutation
- P(a);CHECK
- Try
- S(D);XS(f)
- Vars
- B(j);SBLOCK,XS(D)::QAR1(F)
- R(i);N_GUARD::QAR1(F),XR(i)
- R(d);N_GUARD::S(B),XR(d)
- R(i);N_GUARD::QAR1(F)
- R(i);N_GUARD,P_PINS(B)::QAR1(F)
- B(j);S_CUTR(i)::QAR1(F)
- Refutation
- R(i);
- Try
- Q(F);CHECK,XR(i)
- Vars
- B(j);N_GUARD,P_SPINB(j)::QAR2(F),XB(j)
- Refutation
- S(f);XQ(F)
- Try
- P(C);XR(d)
- Threat
- S(B)
- Vars
- R(i);N_GUARD::QAR1(F),XR(i)
- S(f);N_GUARD::QAR1(F),XS(f)
- Refutation
- P(c);CHECK
- Try
- Actual
- Q(F);
- Threat
- QAR2(F),XR(d)
- Vars
- R(d);XQ(F)::S(B),XR(d)
- S(f);OGATE,XS(D)::QAB1(F)
- S(f);N_GUARD,XB(H)::QAR1(F)
- S(f);N_GUARD::QAR1(F),XS(f)
- R(d);N_GUARD::QAR1(F),XR(d)
- S(f);N_GUARD,SBLOCK::R1(G)
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).