MESON Chess Problem Database
Problem Display
PID: 172056 (3r4/2b1B3/5P2/1pR1pQ1b/3k3q/1P5r/1P1P2B1/1KN5 w - - 0 1)
Apro, Laszlo
Deutsche Schachzeitung, 1977
#2
10 + 8
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qf2
- 2.Qe4#
- 1...Qg3
- 2.Qe4#
- 1...Qg5
- 2.Qe4#
- 1...Qxf6
- 2.Qe4#
- 1...Qe4+
- 2.Qxe4#
- 1...Rh1
- 2.Qd3#
- 1...Rh2
- 2.Qd3#
- 1...Rxb3
- 2.Sxb3#
- 1...Rc3
- 2.bxc3#
- 1...Rd3
- 2.Qxd3#
- 1...Rf3
- 2.Se2#
- 1...Rd5
- 2.Rxd5#
- 1...Rd6
- 2.Qxe5#
- 1...Ra8
- 2.Rd5#
- 1...Rb8
- 2.Rd5#
- 1...Rc8
- 2.Rd5#
- 1...Re8
- 2.Rd5#
- 1...Rf8
- 2.Rd5#
- 1...Rg8
- 2.Rd5#
- 1...Rh8
- 2.Rd5#
- 1...Be2
- 2.Sxe2#
- 1...Bf3
- 2.Qd3#
- 1...Bg4
- 2.Qe4#
- 1...Bg6
- 2.Se2#
- 1...Bf7
- 2.Se2#
- 1...Be8
- 2.Se2#
- 1...Ba5
- 2.Qxe5#
- 1...Bb6
- 2.Qxe5#
- 1...Bd6
- 2.Rd5#
- 1...b4
- 2.Rc4#
- 1...Qf2
- Tries
- 1.Bf3?
- threat
- 2.Se2#
- 2.Qd3#
- 1...Qe4+
- 2.Qxe4#
- 1...Rxf3
- 2.Se2#
- 1...Bxf3
- 2.Qd3#
- 1...Rd6
- 2.Qxe5#
- 1...Bd6
- 2.Rd5#
- 1...Qe1
- 2.Qd3#
- 1...Qf2
- 2.Qd3#
- 2.Qe4#
- 1...Rh1
- 2.Qd3#
- 1...Rh2
- 2.Qd3#
- 1...Bg6
- 2.Se2#
- 1...e4!
- threat
- 1.Rxb5?
- threat
- 2.Bc5#
- 2.Rb4#
- 1...Qe4+
- 2.Qxe4#
- 1...Rc3
- 2.bxc3#
- 1...Rf3
- 2.Se2#
- 1...Rd5
- 2.Rb4#
- 2.Rxd5#
- 1...Rd6
- 2.Qxe5#
- 1...Rb8
- 2.Bc5#
- 2.Rd5#
- 1...Be2
- 2.Sxe2#
- 2.Bc5#
- 1...Bf3
- 2.Qd3#
- 1...Bf7
- 2.Se2#
- 2.Bc5#
- 1...Ba5
- 2.Bc5#
- 2.Qxe5#
- 1...Bb6
- 2.Rb4#
- 2.Qxe5#
- 1...Bd6
- 2.Rd5#
- 1...Rxb3!
- threat
- 1.Qd7+?
- 1...Bd6
- 2.Rd5#
- 1...Rxd7!
- 1...Bd6
- 1.Qf2+?
- 1...Re3
- 2.Qxe3#
- 2.dxe3#
- 1...Qxf2!
- 1...Re3
- 1.Bf3?
- Keys
- 1.Bd6!
- threat
- 2.Rd5#
- 2.Qxe5#
- 1...Qe4+
- 2.Qxe4#
- 1...Qxf6
- 2.Rd5#
- 2.Qe4#
- 1...Rxb3
- 2.Sxb3#
- 2.Qxe5#
- 1...Rxd6
- 2.Qxe5#
- 1...Bxd6
- 2.Rd5#
- 1...Qe1
- 2.Rd5#
- 1...Qg3
- 2.Rd5#
- 2.Qe4#
- 1...Qg5
- 2.Rd5#
- 2.Qe4#
- 1...Qf4
- 2.Rd5#
- 1...Re3
- 2.Rd5#
- 1...Rf3
- 2.Se2#
- 2.Qxe5#
- 1...Re8
- 2.Rd5#
- 1...Bf3
- 2.Qd3#
- 2.Qxe5#
- 1...Bg6
- 2.Se2#
- 2.Rd5#
- 1...Bf7
- 2.Se2#
- 2.Qxe5#
- 1...e4
- 2.Rd5#
- 2.Qd5#
- 2.Qe5#
- threat
- 1.Bd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 26
- Sets
- Q(c);N_GUARD::QAR1(H)
- Q(c);N_GUARD,XP(I)::QAR1(H)
- Q(c);CHECK,N_GUARD::QAR1(H),XQ(c)
- R(a);N_GUARD,P_PINS(B)::QAR1(H)
- R(a);N_GUARD::QAR1(H)
- R(a);P_PINP(C),XP(F)::S(B),XR(a)
- R(a);OGATE::P(C),XR(a)
- R(a);N_GUARD::QAR1(H),XR(a)
- R(a);S_CUTB(f)::S(B)
- R(h);N_GUARD::R1(G),XR(h)
- R(h);S_CUTB(g)::QAB1(H),XP(e)
- R(h);N_GUARD::R1(G)
- B(f);N_GUARD::S(B),XB(f)
- B(f);S_CUTR(a)::QAR1(H)
- B(f);S_CUTQ(c)::QAR1(H)
- B(f);N_GUARD,P_PINQ(H)::S(B)
- B(f);N_GUARD::S(B)
- B(g);N_GUARD::QAB1(H),XP(e)
- B(g);S_CUTR(h)::R1(G)
- P(d);N_GUARD::R1(G)
- Tries
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- Q(c);CHECK,N_GUARD::QAR1(H),XQ(c)
- R(a);XB(E)::S(B)
- B(f);XB(E)::QAR1(H)
- R(h);S_CUTB(g)::QAB1(H),XP(e)
- B(g);S_CUTR(h)::R1(G)
- Q(c);P_PINS(B)::QAR1(H)
- R(a);P_PINS(B)::QAR1(H)
- R(a);::QAR1(H)
- B(f);P_PINQ(H)::S(B)
- Refutation
- P(e);
- Try
- R(G);XP(d)
- Threat
- DUALS(2)
- Vars
- Q(c);CHECK,N_GUARD::QAR1(H),XQ(c)
- R(a);OGATE::P(C),XR(a)
- R(a);S_CUTB(f)::S(B)
- R(h);S_CUTB(g)::QAB1(H),XP(e)
- B(f);S_CUTR(a)::QAR1(H)
- B(g);S_CUTR(h)::R1(G)
- Refutation
- R(a);P_PINP(C),XP(F)
- Try
- Q(H);CHECK
- Vars
- B(g);P_SPINB(g)::R1(G)
- Refutation
- R(h);XQ(H)
- Try
- Q(H);CHECK
- Refutation
- Q(c);XQ(H)
- Try
- Actual
- B(J);
- Threat
- DUALS(2)
- Vars
- Q(c);CHECK,N_GUARD::QAR1(H),XQ(c)
- R(h);XB(J)::QAB1(H),XP(e)
- B(g);XB(J)::R1(G)
- Q(c);P_PINS(B)::R1(G)
- Q(c);::R1(G)
- R(a);::R1(G)
- R(h);::R1(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).