MESON Chess Problem Database
Problem Display
PID: 244454 (4Q3/B3r2p/p4R2/3kn3/R4P2/b4P1B/1Nn5/1b5K w - - 0 1)
Eerkes, Allard Pieter
Magyar Sakkvilag, 1938
#2
9 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Re6
- 2.Qxe6#
- 1...Rxa7
- 2.Qxe5#
- 1...Rb7
- 2.Qxe5#
- 2.Qe6#
- 1...Rc7
- 2.Qxe5#
- 2.Qe6#
- 1...Rd7
- 2.Qxe5#
- 2.Qe6#
- 1...Rf7
- 2.Qxe5#
- 2.Qe6#
- 1...Rg7
- 2.Qxe5#
- 2.Qe6#
- 1...Sa1
- 2.Rd4#
- 1...Se1
- 2.Rd4#
- 1...Se3
- 2.Rd4#
- 1...Sb4
- 2.Ra5#
- 1...Sd4
- 2.Rxd4#
- 1...Sd3
- 2.Qc6#
- 1...Sxf3
- 2.Qc6#
- 1...Sc4
- 2.Qc6#
- 1...Sg4
- 2.Qc6#
- 1...Sc6
- 2.Qxc6#
- 1...Sg6
- 2.Qc6#
- 1...Sd7
- 2.Qa8#
- 1...Sf7
- 2.Qc6#
- 1...Re6
- Tries
- 1.Be6+?
- 1...Rxe6
- 2.Qxe6#
- 1...Kd6!
- 1...Rxe6
- 1.Qb5+?
- 1...Bc5
- 2.Qxc5#
- 1...axb5!
- 1...Bc5
- 1.Qxe7?
- threat
- 2.Qxe5#
- 2.Qe6#
- 1...Bxb2
- 2.Rd6#
- 2.Qc5#
- 2.Qd6#
- 2.Qe6#
- 1...Sxf3
- 2.Qe4#
- 2.Qe6#
- 2.Qb7#
- 2.Qf7#
- 1...Bd6
- 2.Rxd6#
- 2.Qxd6#
- 1...Sd4
- 2.Rxd4#
- 2.Qxe5#
- 1...Sd3
- 2.Qe4#
- 2.Qe6#
- 2.Qb7#
- 2.Qf7#
- 1...Sc4
- 2.Qe4#
- 2.Qe6#
- 2.Qb7#
- 2.Qf7#
- 1...Sg4
- 2.Qe4#
- 2.Qe6#
- 2.Qb7#
- 2.Qf7#
- 1...Sc6
- 2.Be6#
- 2.Qe4#
- 2.Qe6#
- 2.Qf7#
- 1...Sg6
- 2.Qe4#
- 2.Qe6#
- 2.Qb7#
- 2.Qf7#
- 1...Sd7
- 2.Qe4#
- 2.Qe6#
- 2.Qf7#
- 1...Sf7
- 2.Qe4#
- 2.Qe6#
- 2.Qb7#
- 2.Qxf7#
- 1...Bxe7!
- threat
- 1.Qa8+?
- 1...Sc6
- 2.Qxc6#
- 1...Rb7!
- 1...Sc6
- 1.Qd8+?
- 1...Bd6
- 2.Rxd6#
- 2.Qxd6#
- 1...Sd7
- 2.Qa8#
- 1...Rd7!
- 1...Bd6
- 1.Be6+?
- Keys
- 1.Bf5!
- threat
- 2.Be4#
- 1...Rxa7
- 2.Qxe5#
- 1...Sxf3
- 2.Qc6#
- 1...Re6
- 2.Qxe6#
- 1...Sa1
- 2.Rd4#
- 1...Se1
- 2.Rd4#
- 1...Se3
- 2.Rd4#
- 1...Sb4
- 2.Ra5#
- 1...Sd4
- 2.Rxd4#
- 1...Sd3
- 2.Qc6#
- 1...Sc4
- 2.Qc6#
- 1...Sg4
- 2.Qc6#
- 1...Sc6
- 2.Qxc6#
- 1...Sg6
- 2.Qc6#
- 1...Sd7
- 2.Qa8#
- 1...Sf7
- 2.Qc6#
- threat
- 1.Bf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(g);OGATE::QAB1(I),XR(g)
- R(g);OGATE,XB(H)::QAR1(I),XS(e)
- S(b);N_GUARD::R1(E)
- S(b);S_CUTB(c)::R(E)
- S(b);N_GUARD::R1(E),XS(b)
- S(e);N_GUARD::QAB1(I)
- S(e);N_GUARD,XP(C)::QAB1(I)
- S(e);N_GUARD::QAB1(I),XS(e)
- S(e);N_GUARD,S_CUTR(g)::QAB(I)
- Tries
- Try
- B(D);CHECK
- Vars
- R(g);OGATE,XB(D)::QAB1(I),XR(g)
- Refutation
- K(d);P-FLIGHT
- Try
- Q(I);CHECK
- Vars
- B(c);N_GUARD,P_SPINB(c)::QAR1(I),XB(c)
- Refutation
- P(f);XQ(I)
- Try
- Q(I);XR(g)
- Threat
- DUALS(2)
- Refutation
- B(c);XQ(I)
- Try
- Q(I);CHECK
- Vars
- S(e);N_GUARD,P_SPINS(e)::QAB1(I),XS(e)
- Refutation
- R(g);P_SPINR(g)
- Try
- Q(I);CHECK
- Vars
- S(e);N_GUARD,P_SPINS(e),S_CUTR(g)::QAB(I)
- Refutation
- R(g);P_SPINR(g)
- Try
- Actual
- B(D);
- Threat
- B(D)
- Vars
- R(g);OGATE,XB(H)::QAR1(I),XS(e)
- S(e);N_GUARD,XP(C)::QAB1(I)
- R(g);OGATE::QAB1(I),XR(g)
- S(b);N_GUARD::R1(E)
- S(b);S_CUTB(c)::R(E)
- S(b);N_GUARD::R1(E),XS(b)
- S(e);N_GUARD::QAB1(I)
- S(e);N_GUARD::QAB1(I),XS(e)
- S(e);N_GUARD,S_CUTR(g)::QAB(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).