MESON Chess Problem Database
Problem Display
PID: 170945 (3r1r2/bQ1pB2b/4P3/p3P2R/3k4/1P3p2/1P1N1K2/4N3 w - - 0 1)
Eerkes, Allard Pieter
2nd Comm., Problemisten, 1958
#2
10 + 8
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Ra8
- 2.Qxd7#
- 1...Rb8
- 2.Qxd7#
- 1...Rc8
- 2.Qxd7#
- 1...Rde8
- 2.Qxd7#
- 1...Rf5
- 2.Qe4#
- 1...Rfe8
- 2.Sdxf3#
- 1...Rg8
- 2.Sdxf3#
- 1...Rh8
- 2.Sdxf3#
- 1...Be4
- 2.Qxe4#
- 1...Bf5
- 2.Sdxf3#
- 1...Bg8
- 2.Qe4#
- 1...d5
- 2.Qxa7#
- 1...Ra8
- Tries
- 1.Rh4+?
- 1...Rf4
- 2.Sdxf3#
- 1...Be4
- 2.Rxe4#
- 2.Qxe4#
- 1...Kxe5+!
- 1...Rf4
- 1.Rf5?
- threat
- 2.Sdxf3#
- 2.Qe4#
- 1...Rxf5
- 2.Qe4#
- 1...Bxf5
- 2.Sdxf3#
- 1...d5
- 2.Qxa7#
- 1...d6!
- threat
- 1.Qa6?
- threat
- 2.Qc4#
- 2.Qd6#
- 1...dxe6
- 2.Qc4#
- 1...Rf5
- 2.Qd6#
- 1...Bf5
- 2.Qd6#
- 1...d6
- 2.Qc4#
- 1...Rc8
- 2.Qd6#
- 1...Bc5
- 2.Qc4#
- 1...Bb6
- 2.Qc4#
- 1...Bb8
- 2.Qc4#
- 1...Bd3
- 2.Qxd3#
- 2.Qd6#
- 1...Be4
- 2.Qc4#
- 1...d5
- 2.Qxa7#
- 1...Kd5+!
- threat
- 1.Qc6?
- threat
- 2.Qc4#
- 2.Qd6#
- 1...dxe6
- 2.Qc4#
- 1...Rf5
- 2.Qe4#
- 2.Qd6#
- 1...Bf5
- 2.Sdxf3#
- 2.Qd6#
- 1...Rc8
- 2.Qxd7#
- 2.Qd6#
- 1...Bc5
- 2.Bxc5#
- 2.Qxc5#
- 1...Bb8
- 2.Bc5#
- 2.Qc4#
- 2.Qc5#
- 1...Bd3
- 2.Qd6#
- 1...Be4
- 2.Qxe4#
- 2.Qc4#
- 1...d5
- 2.Qa4#
- 2.Qc3#
- 1...d6
- 2.Qc4#
- 1...dxc6!
- threat
- 1.Qc7?
- threat
- 2.Qd6#
- 2.Qc4#
- 1...dxe6
- 2.Qc4#
- 1...Rc8
- 2.Qd6#
- 2.Qxd7#
- 1...Rf5
- 2.Qd6#
- 1...Bc5
- 2.Qxc5#
- 1...Bb8
- 2.Qc4#
- 2.Qc5#
- 1...Bd3
- 2.Qd6#
- 1...Be4
- 2.Qc4#
- 1...Bf5
- 2.Qd6#
- 1...d5
- 2.Qc3#
- 2.Qxa7#
- 1...d6
- 2.Qc4#
- 1...Kd5+!
- threat
- 1.Rh4+?
- Keys
- 1.Qb5!
- threat
- 2.Qc4#
- 1...Rc8
- 2.Qxd7#
- 1...Rf5
- 2.Sc2#
- 1...Bd3
- 2.Qxd3#
- 1...Bf5
- 2.Sexf3#
- 1...d5
- 2.Qa4#
- threat
- 1.Qb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 1
- REMOVED MATES = 8
- Sets
- R(g);N_GUARD::QAR(I),XP(e)
- R(h);S_CUTB(f)::QAR1(I)
- R(h);N_GUARD::S(C),XP(a)
- B(f);N_GUARD::QAR1(I),XB(f)
- B(f);S_CUTR(h)::S(C),XP(a)
- B(f);N_GUARD::QAR1(I)
- P(e);SBLOCK::QAB(I),XB(d)
- Tries
- Try
- R(G);CHECK
- Vars
- R(h);P_SPINR(h)::S(C),XP(a)
- Refutation
- K(b);CHECK,S_FLIGHT,XP(F)
- Try
- R(G);
- Threat
- DUALS(2)
- Vars
- R(h);XR(G)::QAR1(I)
- B(f);XR(G)::S(C),XP(a)
- P(e);SBLOCK::QAB(I),XB(d)
- Refutation
- P(e);
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- P(e);XP(H)::QAR1(I)
- R(h);::QAR2(I)
- B(f);::QAR2(I)
- P(e);::QAR1(I)
- R(g);::QAR2(I)
- B(d);::QAR1(I)
- B(f);::QAR1(I)
- P(e);SBLOCK::QAB(I),XB(d)
- Refutation
- K(b);CHECK,P-FLIGHT
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- P(e);XP(H)::QAR1(I)
- B(f);::QAR2(I)
- P(e);::QAR1(I)
- Refutation
- P(e);XQ(I)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- P(e);XP(H)::QAR1(I)
- R(h);::QAR2(I)
- B(d);N_GUARD::QAB1(I),XB(d)
- B(f);::QAR2(I)
- B(f);::QAR1(I)
- P(e);::QAR1(I)
- Refutation
- K(b);CHECK,P-FLIGHT
- Try
- Actual
- Q(I);
- Threat
- QAR1(I)
- Vars
- R(g);N_GUARD::QAR(I),XP(e)
- R(h);S_CUTB(f)::S(A)
- B(f);N_GUARD::QAR1(I),XB(f)
- B(f);S_CUTR(h)::S(A),XP(a)
- P(e);SBLOCK::QAR(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).