MESON Chess Problem Database
Problem Display
PID: 93025 (8/Bp1KN3/1r5p/1pkpb2R/1pnp1P2/1Q1Pp3/4P3/8 w - - 0 1)
Eriksson, Finn Olof
Schackvarlden, 1938
#2
8 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Bxf4
- 2.Rxd5#
- 1...Bd6
- 2.Rxd5#
- 1...Bf6
- 2.Rxd5#
- 1...Bc7
- 2.Rxd5#
- 1...Bg7
- 2.Rxd5#
- 1...Bb8
- 2.Rxd5#
- 1...Bh8
- 2.Rxd5#
- 1...Sb2
- 2.Qxd5#
- 1...Sd2
- 2.Qxd5#
- 1...Sa3
- 2.Qxd5#
- 1...Sa5
- 2.Qxd5#
- 1...Sd6
- 2.Qxd5#
- 1...Bxf4
- Tries
- 1.Rf5?
- 1...Bxf4
- 2.Rxd5#
- 1...Bd6
- 2.Rxd5#
- 1...Bf6
- 2.Rxd5#
- 1...Bc7
- 2.Rxd5#
- 1...Bg7
- 2.Rxd5#
- 1...Bb8
- 2.Rxd5#
- 1...Bh8
- 2.Rxd5#
- 1...Sb2
- 2.Qxd5#
- 1...Sd2
- 2.Qxd5#
- 1...Sa3
- 2.Qxd5#
- 1...Sa5
- 2.Qxd5#
- 1...Sd6
- 2.Qxd5#
- 1...h5!
- 1...Bxf4
- 1.Qa2?
- 1...Bxf4
- 2.Rxd5#
- 1...Bd6
- 2.Rxd5#
- 1...Bf6
- 2.Rxd5#
- 1...Bc7
- 2.Rxd5#
- 1...Bg7
- 2.Rxd5#
- 1...Bb8
- 2.Rxd5#
- 1...Bh8
- 2.Rxd5#
- 1...Sb2
- 2.Qxd5#
- 1...Sd2
- 2.Qxd5#
- 1...Sa3
- 2.Qxd5#
- 1...Sa5
- 2.Qxd5#
- 1...Sd6
- 2.Qxd5#
- 1...b3!
- 1...Bxf4
- 1.Qc2?
- 1...Bxf4
- 2.Rxd5#
- 1...Bd6
- 2.Rxd5#
- 1...Bf6
- 2.Rxd5#
- 1...Bc7
- 2.Rxd5#
- 1...Bg7
- 2.Rxd5#
- 1...Bb8
- 2.Rxd5#
- 1...Bh8
- 2.Rxd5#
- 1...b3!
- 1...Bxf4
- 1.Qxc4+?
- 1...dxc4
- 2.Rxe5#
- 1...bxc4!
- 1...dxc4
- 1.fxe5?
- 1...Sb2
- 2.Qxd5#
- 1...Sd2
- 2.Qxd5#
- 1...Sa3
- 2.Qxd5#
- 1...Sa5
- 2.Qxd5#
- 1...Sd6
- 2.Qxd5#
- 1...Sxe5+!
- 1...Sb2
- 1.Rf5?
- Keys
- 1.Sxd5!
- 1...Kxd5
- 2.Rxe5#
- 1...Bxf4
- 2.Qxb4#
- 1...Bd6
- 2.Qxb4#
- 1...Bf6
- 2.Qxb4#
- 1...Bc7
- 2.Qxb4#
- 1...Bg7
- 2.Qxb4#
- 1...Bb8
- 2.Qxb4#
- 1...Bh8
- 2.Qxb4#
- 1...Sb2
- 2.Bxb6#
- 1...Sd2
- 2.Bxb6#
- 1...Sa3
- 2.Bxb6#
- 1...Sa5
- 2.Bxb6#
- 1...Sd6
- 2.Bxb6#
- 1...Kxd5
- 1.Sxd5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 12
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(h);OGATE,P_SPINP(g),XP(D)::R1(E),XP(g)
- B(h);OGATE,P_SPINP(g)::R1(E),XP(g)
- S(c);OGATE::QAR1(B),XP(g)
- Tries
- Try
- R(E);
- Vars
- B(h);OGATE,P_SPINP(g),XP(D)::R1(E),XP(g)
- B(h);OGATE,P_SPINP(g)::R1(E),XP(g)
- S(c);OGATE::QAR1(B),XP(g)
- Refutation
- P(j);
- Try
- Q(B);
- Vars
- B(h);OGATE,P_SPINP(g),XP(D)::R1(E),XP(g)
- B(h);OGATE,P_SPINP(g)::R1(E),XP(g)
- S(c);OGATE::QAR1(B),XP(g)
- Refutation
- P(b);
- Try
- Q(B);P_PINS(c)
- Vars
- B(h);OGATE,P_SPINP(g),XP(D)::R1(E),XP(g)
- B(h);OGATE,P_SPINP(g)::R1(E),XP(g)
- Refutation
- P(b);
- Try
- Q(B);CHECK,XS(c)
- Vars
- P(g);P_SPINB(h),S_CUTP(e),XQ(B)::R(E),XB(h)
- Refutation
- P(e);XQ(B)
- Try
- P(D);XB(h)
- Vars
- S(c);OGATE::QAR1(B),XP(g)
- Refutation
- S(c);CHECK,XP(D)
- Try
- Actual
- S(H);XP(g)
- Vars
- K(f);N_SPINR(i),OGATEB,P-FLIGHT,P_SPINB(h),P_SPINS(c),XS(H)::R1(E),XB(h)
- B(h);XP(D)::QAB1(B),XP(b)
- B(h);::QAB1(B),XP(b)
- S(c);N_GUARD::B(F),XR(i)
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).