MESON Chess Problem Database
Problem Display
PID: 3046 (2B2Q2/p2n2p1/P3knp1/Rp2P1Pp/b4R1K/1p6/1B2N3/8 w - - 0 1)
Meiners, Willem Barend Hendrik
Source?, 1917
#2
10 + 10
| 2681 | All Change Here! | 1919 |
| 1101 | BCSC Final | 1989-1990 |
SOLUTION
- SOUND
- Sets
- 1...Kd5
- 2.Qd6#
- 1...Se4
- 2.Qf7#
- 1...Sg4
- 2.Qd6#
- 2.Qf7#
- 1...Sd5
- 2.Qd6#
- 2.Qf7#
- 1...Sh7
- 2.Qd6#
- 2.Qf7#
- 1...Se8
- 2.Qf7#
- 1...Sg8
- 2.Qd6#
- 2.Qf7#
- 1...b4
- 2.Sd4#
- 1...Kd5
- Tries
- 1.Kh3?
- 1...Kd5
- 2.Qd6#
- 1...Se4
- 2.Qf7#
- 1...Sg4
- 2.Qd6#
- 2.Qf7#
- 1...Sd5
- 2.Qd6#
- 2.Qf7#
- 1...Sh7
- 2.Qd6#
- 2.Qf7#
- 1...Se8
- 2.Qf7#
- 1...Sg8
- 2.Qd6#
- 2.Qf7#
- 1...b4
- 2.Sd4#
- 1...h4!
- 1...Kd5
- 1.Sc1?
- 1...Kd5
- 2.Qd6#
- 1...Se4
- 2.Qf7#
- 1...Sg4
- 2.Qd6#
- 2.Qf7#
- 1...Sd5
- 2.Qd6#
- 2.Qf7#
- 1...Sh7
- 2.Qd6#
- 2.Qf7#
- 1...Se8
- 2.Qf7#
- 1...Sg8
- 2.Qd6#
- 2.Qf7#
- 1...b4!
- 1...Kd5
- 1.Sg1?
- 1...Kd5
- 2.Qd6#
- 1...Se4
- 2.Qf7#
- 1...Sg4
- 2.Qd6#
- 2.Qf7#
- 1...Sd5
- 2.Qd6#
- 2.Qf7#
- 1...Sh7
- 2.Qd6#
- 2.Qf7#
- 1...Se8
- 2.Qf7#
- 1...Sg8
- 2.Qd6#
- 2.Qf7#
- 1...b4!
- 1...Kd5
- 1.Sg3?
- 1...Kd5
- 2.Qd6#
- 1...Se4
- 2.Qf7#
- 1...Sg4
- 2.Qd6#
- 2.Qf7#
- 1...Sd5
- 2.Qd6#
- 2.Qf7#
- 1...Sh7
- 2.Qd6#
- 2.Qf7#
- 1...Se8
- 2.Qf7#
- 1...Sg8
- 2.Qd6#
- 2.Qf7#
- 1...b4!
- 1...Kd5
- 1.Ba1?
- 1...Kd5
- 2.Qd6#
- 1...b4
- 2.Sd4#
- 1...Se4
- 2.Qf7#
- 1...Sg4
- 2.Qd6#
- 2.Qf7#
- 1...Sd5
- 2.Qd6#
- 2.Qf7#
- 1...Sh7
- 2.Qd6#
- 2.Qf7#
- 1...Se8
- 2.Qf7#
- 1...Sg8
- 2.Qd6#
- 2.Qf7#
- 1...b2!
- 1...Kd5
- 1.Bc3?
- 1...Kd5
- 2.Qd6#
- 1...b4
- 2.Sd4#
- 1...Se4
- 2.Qf7#
- 1...Sg4
- 2.Qd6#
- 2.Qf7#
- 1...Sd5
- 2.Qd6#
- 2.Qf7#
- 1...Sh7
- 2.Qd6#
- 2.Qf7#
- 1...Se8
- 2.Qf7#
- 1...Sg8
- 2.Qd6#
- 2.Qf7#
- 1...b2!
- 1...Kd5
- 1.Bxd7+?
- 1...Kd5
- 2.Qd6#
- 1...Sxd7
- 2.Qd6#
- 2.Qf7#
- 1...Kxd7!
- 1...Kd5
- 1.Rf1?
- 1...b4
- 2.Sd4#
- 1...Se4
- 2.Sf4#
- 2.Qf7#
- 1...Sg4
- 2.Sf4#
- 2.Qd6#
- 2.Qf7#
- 1...Sd5
- 2.Qd6#
- 2.Qf7#
- 1...Sh7
- 2.Sf4#
- 2.Qd6#
- 2.Qf7#
- 1...Se8
- 2.Sf4#
- 2.Qf7#
- 1...Sg8
- 2.Sf4#
- 2.Qd6#
- 2.Qf7#
- 1...Kd5!
- 1...b4
- 1.Rf2?
- 1...b4
- 2.Sd4#
- 1...Se4
- 2.Sf4#
- 2.Qf7#
- 1...Sg4
- 2.Sf4#
- 2.Qd6#
- 2.Qf7#
- 1...Sd5
- 2.Qd6#
- 2.Qf7#
- 1...Sh7
- 2.Sf4#
- 2.Qd6#
- 2.Qf7#
- 1...Se8
- 2.Sf4#
- 2.Qf7#
- 1...Sg8
- 2.Sf4#
- 2.Qd6#
- 2.Qf7#
- 1...Kd5!
- 1...b4
- 1.Rf3?
- 1...b4
- 2.Sd4#
- 1...Se4
- 2.Sf4#
- 2.Qf7#
- 1...Sg4
- 2.Sf4#
- 2.Qd6#
- 2.Qf7#
- 1...Sd5
- 2.Qd6#
- 2.Qf7#
- 1...Sh7
- 2.Sf4#
- 2.Qd6#
- 2.Qf7#
- 1...Se8
- 2.Sf4#
- 2.Qf7#
- 1...Sg8
- 2.Sf4#
- 2.Qd6#
- 2.Qf7#
- 1...Kd5!
- 1...b4
- 1.Rfxa4?
- 1...Kd5
- 2.Qd6#
- 1...Kf5
- 2.Bxd7#
- 1...bxa4
- 2.Sd4#
- 1...b4
- 2.Sd4#
- 1...Se4
- 2.Sf4#
- 1...Sg4
- 2.Sf4#
- 1...Sh7
- 2.Sf4#
- 1...Se8
- 2.Sf4#
- 1...Sg8
- 2.Sf4#
- 1...Sd5!
- 1...Kd5
- 1.Rb4?
- 1...Kd5
- 2.Qd6#
- 1...Kf5
- 2.Bxd7#
- 1...Se4
- 2.Sf4#
- 1...Sg4
- 2.Sf4#
- 1...Sh7
- 2.Sf4#
- 1...Se8
- 2.Sf4#
- 1...Sg8
- 2.Sf4#
- 1...Sd5!
- 1...Kd5
- 1.Rxb5?
- threat
- 2.Sd4#
- 1...Sd5
- 2.Qd6#
- 2.Qf7#
- 1...Bxb5!
- threat
- 1.Qe7+?
- 1...Kd5
- 2.Bb7#
- 2.Qd6#
- 1...Kxe7!
- 1...Kd5
- 1.Qxg7?
- 1...b4
- 2.Sd4#
- 2.Rxf6#
- 2.Qxf6#
- 1...Se4
- 2.Qxd7#
- 2.Qf7#
- 1...Sg4
- 2.Qxd7#
- 2.Qf7#
- 1...Sd5
- 2.Sd4#
- 2.Bxd7#
- 2.Qxd7#
- 2.Qf7#
- 1...Sh7
- 2.Qxd7#
- 2.Qf7#
- 1...Se8
- 2.Qxd7#
- 2.Qf7#
- 1...Sg8
- 2.Qxd7#
- 2.Qf7#
- 1...Kd5!
- 1...b4
- 1.Qxf6+?
- 1...Kd5
- 2.Qd6#
- 1...gxf6!
- 1...Kd5
- 1.Kh3?
- Keys
- 1.Rc4!
- 1...Kd5
- 2.Qf7#
- 1...Kf5
- 2.Bxd7#
- 1...bxc4
- 2.Sd4#
- 1...b4
- 2.Sd4#
- 1...Se4
- 2.Sf4#
- 1...Sg4
- 2.Sf4#
- 1...Sd5
- 2.Rc6#
- 1...Sh7
- 2.Sf4#
- 1...Se8
- 2.Sf4#
- 1...Sg8
- 2.Sf4#
- 1...Kd5
- 1.Rc4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 3
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- K(e);N_SPINS(i),P_SPINP(c),S_FLIGHT::QAR1(J)
- S(f);::QAB1(J)
- P(c);::S(B)
- Tries
- Try
- K(D);P-FLIGHT
- Vars
- K(e);N_SPINS(i),P_SPINP(c),S_FLIGHT::QAR1(J)
- S(f);::QAB1(J)
- P(c);::S(B)
- Refutation
- P(d);
- Try
- S(B);
- Vars
- K(e);N_SPINS(i),P_SPINP(c),S_FLIGHT::QAR1(J)
- S(f);::QAB1(J)
- Refutation
- P(c);
- Try
- S(B);
- Vars
- K(e);N_SPINS(i),P_SPINP(c),S_FLIGHT::QAR1(J)
- S(f);::QAB1(J)
- Refutation
- P(c);
- Try
- S(B);
- Vars
- K(e);N_SPINS(i),P_SPINP(c),S_FLIGHT::QAR1(J)
- S(f);::QAB1(J)
- Refutation
- P(c);
- Try
- B(A);
- Vars
- K(e);N_SPINS(i),P_SPINP(c),S_FLIGHT::QAR1(J)
- P(c);::S(B)
- S(f);::QAB1(J)
- Refutation
- P(a);
- Try
- B(A);
- Vars
- K(e);N_SPINS(i),P_SPINP(c),S_FLIGHT::QAR1(J)
- P(c);::S(B)
- S(f);::QAB1(J)
- Refutation
- P(a);
- Try
- B(I);CHECK,XS(i)
- Vars
- K(e);P_SPINP(c),S_FLIGHT::QAR1(J)
- Refutation
- K(e);S_FLIGHT,XB(I)
- Try
- R(C);
- Vars
- P(c);::S(B)
- Refutation
- K(e);N_SPINS(i),P_SPINP(c),S_FLIGHT
- Try
- R(C);
- Vars
- P(c);::S(B)
- Refutation
- K(e);N_SPINS(i),P_SPINP(c),S_FLIGHT
- Try
- R(C);
- Vars
- P(c);::S(B)
- Refutation
- K(e);N_SPINS(i),P_SPINP(c),S_FLIGHT
- Try
- R(C);XB(b)
- Vars
- K(e);N_SPINS(i),P_SPINP(c),S_FLIGHT::QAR1(J)
- K(e);N_SPINS(i),P_SPINS(f),S_FLIGHT::B(I),XS(i)
- P(c);XR(C)::S(B)
- P(c);::S(B)
- S(f);::S(B)
- Refutation
- S(f);
- Try
- R(C);
- Vars
- K(e);N_SPINS(i),P_SPINP(c),S_FLIGHT::QAR1(J)
- K(e);N_SPINS(i),P_SPINS(f),S_FLIGHT::B(I),XS(i)
- S(f);::S(B)
- Refutation
- S(f);
- Try
- R(E);XP(c)
- Threat
- S(B)
- Refutation
- B(b);XR(E)
- Try
- Q(J);CHECK
- Refutation
- K(e);N_SPINS(i),P-FLIGHT,XQ(J)
- Try
- Q(J);XP(j)
- Refutation
- K(e);N_SPINS(i),P_SPINP(c),S_FLIGHT
- Try
- Q(J);CHECK,XS(f)
- Vars
- K(e);N_SPINS(i),OGATE,P_SPINP(c),S_FLIGHT::QAR1(J)
- Refutation
- P(j);XQ(J)
- Try
- Actual
- R(C);
- Vars
- K(e);N_SPINS(i),P_SPINP(c),S_FLIGHT::QAB(J)
- K(e);N_SPINS(i),P_SPINS(f),S_FLIGHT::B(I),XS(i)
- P(c);XR(C)::S(B)
- P(c);::S(B)
- S(f);::S(B)
- S(f);SBLOCK::R(C)
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).