MESON Chess Problem Database
Problem Display
PID: 80410 (8/8/3N4/b2N2p1/B2P2Q1/K1nkp1P1/1R6/1b2B3 w - - 0 1)
Drese, Gerardus Hendrikus
Match: Groningen - Overijsel, 1942
#2
9 + 6
| 6426 | Probleemcomponisten V - G H Drese | 1947 |
SOLUTION
- SOUND
- Sets
- 1...Ba2
- 2.Bc2#
- 1...Bc2
- 2.Bxc2#
- 1...Bb4+
- 2.Sxb4#
- 1...Bb6
- 2.Sb4#
- 1...Bc7
- 2.Sb4#
- 1...Bd8
- 2.Sb4#
- 1...Sd1
- 2.Bb5#
- 2.Qe4#
- 1...Sa2
- 2.Bb5#
- 2.Qe4#
- 1...Se2
- 2.Bb5#
- 2.Qe4#
- 1...Sxa4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sb5+
- 2.Bxb5#
- 1...Sxd5
- 2.Bb5#
- 2.Qe4#
- 1...e2
- 2.Rd2#
- 1...Ba2
- Tries
- 1.Sxc3?
- threat
- 2.Bb5#
- 2.Qd1#
- 2.Qe4#
- 1...Bxc3
- 2.Bb5#
- 2.Qe4#
- 1...e2
- 2.Qe4#
- 1...Ba2
- 2.Bc2#
- 2.Qd1#
- 2.Qe4#
- 1...Bc2
- 2.Bxc2#
- 2.Bb5#
- 2.Qe4#
- 1...Bb4+!
- threat
- 1.Bxc3?
- threat
- 2.Bb5#
- 2.Qd1#
- 2.Qe2#
- 2.Qf5#
- 2.Qe4#
- 1...Bxc3
- 2.Bb5#
- 2.Qe4#
- 1...Ba2
- 2.Bc2#
- 2.Qd1#
- 2.Qe2#
- 2.Qf5#
- 2.Qe4#
- 1...Bc2
- 2.Bxc2#
- 2.Bb5#
- 1...e2
- 2.Bb5#
- 2.Rd2#
- 2.Qxe2#
- 2.Qf3#
- 2.Qf5#
- 2.Qe4#
- 1...Bb4+!
- threat
- 1.Bd1?
- 1...Bb4+
- 2.Sxb4#
- 1...Sxd1
- 2.Qe4#
- 1...Sxd5
- 2.Be2#
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Ba2
- 2.Bc2#
- 1...Bc2
- 2.Bxc2#
- 1...Bb6
- 2.Sb4#
- 1...Bc7
- 2.Sb4#
- 1...Bd8
- 2.Sb4#
- 1...Sa2
- 2.Be2#
- 2.Qe4#
- 1...Se2
- 2.Bxe2#
- 2.Qe4#
- 1...Sa4
- 2.Be2#
- 2.Qe4#
- 1...e2
- 2.Rd2#
- 1...Sb5+!
- 1...Bb4+
- 1.Bb3?
- threat
- 2.Bc4#
- 1...Bb4+
- 2.Sxb4#
- 1...Se4
- 2.Qxe4#
- 1...Ba2
- 2.Bc2#
- 1...Sb5+!
- threat
- 1.Rf2?
- 1...Bb4+
- 2.Sxb4#
- 1...Sb5+
- 2.Bxb5#
- 1...Sxa4
- 2.Qe4#
- 1...Sxd5
- 2.Bb5#
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Ba2
- 2.Bc2#
- 1...Bc2
- 2.Bxc2#
- 1...Bb6
- 2.Sb4#
- 1...Bc7
- 2.Sb4#
- 1...Bd8
- 2.Sb4#
- 1...Sd1
- 2.Bb5#
- 2.Qe4#
- 1...Sa2
- 2.Bb5#
- 2.Qe4#
- 1...Se2
- 2.Qe4#
- 1...e2
- 2.Rf3#
- 1...exf2!
- 1...Bb4+
- 1.Rg2?
- 1...Bb4+
- 2.Sxb4#
- 1...Sb5+
- 2.Bxb5#
- 1...Sxa4
- 2.Qe4#
- 1...Sxd5
- 2.Bb5#
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Ba2
- 2.Bc2#
- 1...Bc2
- 2.Bxc2#
- 1...Bb6
- 2.Sb4#
- 1...Bc7
- 2.Sb4#
- 1...Bd8
- 2.Sb4#
- 1...Sd1
- 2.Bb5#
- 2.Qe4#
- 1...Sa2
- 2.Bb5#
- 2.Qe4#
- 1...Se2
- 2.Qe4#
- 1...e2!
- 1...Bb4+
- 1.Rh2?
- 1...Bb4+
- 2.Sxb4#
- 1...Sb5+
- 2.Bxb5#
- 1...Sxa4
- 2.Qe4#
- 1...Sxd5
- 2.Bb5#
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Ba2
- 2.Bc2#
- 1...Bc2
- 2.Bxc2#
- 1...Bb6
- 2.Sb4#
- 1...Bc7
- 2.Sb4#
- 1...Bd8
- 2.Sb4#
- 1...Sd1
- 2.Bb5#
- 2.Qe4#
- 1...Sa2
- 2.Bb5#
- 2.Qe4#
- 1...Se2
- 2.Qe4#
- 1...e2!
- 1...Bb4+
- 1.Qf5+?
- 1...Se4
- 2.Qxe4#
- 1...Kxd4!
- 1...Se4
- 1.Qf4?
- threat
- 2.Qxe3#
- 1...Bb4+
- 2.Sxb4#
- 1...Sb5+
- 2.Bxb5#
- 1...Sxd5
- 2.Bb5#
- 2.Qe4#
- 1...Sd1
- 2.Bb5#
- 2.Qe4#
- 1...e2
- 2.Rd2#
- 2.Qd2#
- 2.Qe3#
- 1...gxf4!
- threat
- 1.Sxc3?
- Keys
- 1.Rb3!
- threat
- 2.Qd1#
- 1...Bb4+
- 2.Sxb4#
- 1...Kc2
- 2.Rxc3#
- 1...Bc2
- 2.Bb5#
- 1...e2
- 2.Qe4#
- threat
- 1.Rb3!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- B(a);N_GUARD::B(E)
- B(a);N_GUARD::B(E),XB(a)
- B(e);CHECK,N_GUARD::S(H),XB(e)
- B(e);N_GUARD::S(H)
- S(b);N_GUARD,XB(E)::QAB1(G)
- S(b);N_GUARD::QAB1(G),XS(b)
- S(b);CHECK,N_GUARD::B(E),XS(b)
- P(d);N_GUARD::R1(B)
- Tries
- Try
- S(H);XS(b)
- Threat
- DUALS(3)
- Vars
- P(d);::QAB1(G)
- Refutation
- B(e);CHECK
- Try
- B(A);XS(b)
- Threat
- DUALS(5)
- Refutation
- B(e);CHECK
- Try
- B(E);
- Vars
- B(e);CHECK,N_GUARD::S(H),XB(e)
- S(b);N_GUARD,XB(E)::QAB1(G)
- S(b);N_GUARD::QAB1(G),XS(b)
- B(a);N_GUARD::B(E)
- B(a);N_GUARD::B(E),XB(a)
- B(e);N_GUARD::S(H)
- P(d);N_GUARD::R1(B)
- Refutation
- S(b);CHECK
- Try
- B(E);
- Threat
- B(E)
- Vars
- B(e);CHECK,N_GUARD::S(H),XB(e)
- S(b);N_GUARD::QAB1(G),XS(b)
- B(a);N_GUARD::B(E)
- Refutation
- S(b);CHECK
- Try
- R(B);
- Vars
- B(e);CHECK,N_GUARD::S(H),XB(e)
- S(b);CHECK,N_GUARD::B(E),XS(b)
- S(b);N_GUARD,XB(E)::QAB1(G)
- S(b);N_GUARD::QAB1(G),XS(b)
- B(a);N_GUARD::B(E)
- B(a);N_GUARD::B(E),XB(a)
- B(e);N_GUARD::S(H)
- S(b);N_GUARD::QAB1(G)
- P(d);OGATEB,SBLOCK::R(B)
- Refutation
- P(d);XR(B)
- Try
- R(B);
- Vars
- B(e);CHECK,N_GUARD::S(H),XB(e)
- S(b);CHECK,N_GUARD::B(E),XS(b)
- S(b);N_GUARD,XB(E)::QAB1(G)
- S(b);N_GUARD::QAB1(G),XS(b)
- B(a);N_GUARD::B(E)
- B(a);N_GUARD::B(E),XB(a)
- B(e);N_GUARD::S(H)
- S(b);N_GUARD::QAB1(G)
- Refutation
- P(d);
- Try
- R(B);
- Vars
- B(e);CHECK,N_GUARD::S(H),XB(e)
- S(b);CHECK,N_GUARD::B(E),XS(b)
- S(b);N_GUARD,XB(E)::QAB1(G)
- S(b);N_GUARD::QAB1(G),XS(b)
- B(a);N_GUARD::B(E)
- B(a);N_GUARD::B(E),XB(a)
- B(e);N_GUARD::S(H)
- S(b);N_GUARD::QAB1(G)
- Refutation
- P(d);
- Try
- Q(G);CHECK
- Vars
- S(b);N_GUARD,P_SPINS(b)::QAB1(G),XS(b)
- Refutation
- K(c);P-FLIGHT,XP(F)
- Try
- Q(G);
- Threat
- QAR1(G),XP(d)
- Vars
- B(e);CHECK,N_GUARD::S(H),XB(e)
- S(b);CHECK,N_GUARD::B(E),XS(b)
- Refutation
- P(f);XQ(G)
- Try
- Actual
- R(B);P_PINS(b)
- Threat
- QAR2(G)
- Vars
- B(e);CHECK,N_GUARD::S(H),XB(e)
- K(c);N_SPINS(b),S_FLIGHT::B(E)+R(B),DCHECK,XS(b)
- B(a);SBLOCK::B(E)
- P(d);::QAB1(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).