MESON Chess Problem Database
Problem Display
PID: 261373 (1r2b3/2PBP2q/rbR3p1/3kp1NQ/P1pP2p1/5P2/1pN2n1B/1K6 w - - 0 1)
Machler, Emil
Neue Zurcher Zeitung, 1991
#2
12 + 12
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Se4
- 2.fxe4#
- 1...exd4
- 2.Sb4#
- 1...e4
- 2.Rd6#
- 1...Se4
- Tries
- 1.Sf7?
- threat
- 2.Rd6#
- 2.Qxe5#
- 1...Qxh5
- 2.Rd6#
- 1...Qxf7
- 2.Qxe5#
- 1...Bxc7
- 2.Rc5#
- 1...Bxd7
- 2.Rd6#
- 1...Bxf7
- 2.Qxe5#
- 1...gxf3
- 2.Qxe5#
- 1...gxh5
- 2.Rd6#
- 1...Qg7
- 2.Rd6#
- 1...Qh8
- 2.Rd6#
- 1...Ba5
- 2.Rc5#
- 2.Qxe5#
- 1...Bc5
- 2.Rxc5#
- 2.Qxe5#
- 1...Ba7
- 2.Qxe5#
- 1...Sd3
- 2.Rd6#
- 1...Se4
- 2.Qxe5#
- 1...c3
- 2.Qxe5#
- 1...g5
- 2.Rd6#
- 1...Bxd4!
- threat
- 1.Sxh7?
- threat
- 2.Sf6#
- 2.Qxe5#
- 1...Bxd4
- 2.Sf6#
- 1...Bxc7
- 2.Sf6#
- 1...gxh5
- 2.Sf6#
- 1...Sd3
- 2.Sf6#
- 1...Se4
- 2.Qxe5#
- 1...g5
- 2.Sf6#
- 1...Bxd7!
- threat
- 1.Bxe5?
- threat
- 2.Se3#
- 2.Sb4#
- 2.Rd6#
- 1...Qxe7
- 2.Se3#
- 1...Rxa4
- 2.Se3#
- 2.Rd6#
- 1...Bxc7
- 2.Se3#
- 2.Rc5#
- 1...Bxd7
- 2.Sb4#
- 2.Rd6#
- 1...gxh5
- 2.Rd6#
- 1...Ba5
- 2.Se3#
- 2.Rc5#
- 1...Bc5
- 2.Se3#
- 2.Rxc5#
- 1...Ba7
- 2.Se3#
- 1...Sd1
- 2.Sb4#
- 2.Rd6#
- 1...Sd3
- 2.Se3#
- 2.Rd6#
- 1...Se4
- 2.Se3#
- 2.Sb4#
- 2.fxe4#
- 1...c3
- 2.Se3#
- 2.Sb4#
- 1...Bxd4!
- threat
- 1.Qxg4?
- threat
- 2.Se3#
- 2.Sb4#
- 2.Qe6#
- 1...Qxe7
- 2.Se3#
- 1...Rxa4
- 2.Se3#
- 2.Qe6#
- 1...Bxd4
- 2.Qe6#
- 1...Bxc7
- 2.Se3#
- 2.Qe6#
- 1...Bxd7
- 2.Sb4#
- 2.Qxd7#
- 1...exd4
- 2.Sb4#
- 2.Qe6#
- 1...Qg8
- 2.Se3#
- 2.Sb4#
- 1...Qh3
- 2.Se3#
- 2.Sb4#
- 1...Qf7
- 2.Se3#
- 2.Sb4#
- 1...Ba5
- 2.Se3#
- 2.Qe6#
- 1...Bc5
- 2.Se3#
- 2.Qe6#
- 1...Ba7
- 2.Se3#
- 2.Qe6#
- 1...Bf7
- 2.Se3#
- 2.Sb4#
- 1...Sd1
- 2.Sb4#
- 2.Qe6#
- 2.Qe4#
- 1...Sd3
- 2.Se3#
- 2.Qe6#
- 2.Qe4#
- 1...Se4
- 2.Qe6#
- 2.Qxe4#
- 2.fxe4#
- 1...e4
- 2.Rd6#
- 2.Qe6#
- 1...Sxg4!
- threat
- 1.cxb8Q?
- threat
- 2.Rd6#
- 2.Qxe5#
- 2.Qd6#
- 1...Bxd4
- 2.Sb4#
- 2.Qd6#
- 1...Bxd7
- 2.Rd6#
- 2.Qd6#
- 1...exd4
- 2.Sb4#
- 2.Qe5#
- 2.Qd6#
- 1...Qg7
- 2.Rd6#
- 2.Qd6#
- 1...Qh8
- 2.Rd6#
- 2.Qd6#
- 1...Ba5
- 2.Rc5#
- 2.Qxe5#
- 2.Qd6#
- 2.Qb5#
- 1...Bc5
- 2.Rxc5#
- 2.Qxe5#
- 1...Ba7
- 2.Qxe5#
- 2.Qd6#
- 1...Bc7
- 2.Qb5#
- 1...Bd8
- 2.Rc5#
- 2.Qxe5#
- 2.Qd6#
- 2.Qb5#
- 1...Sd3
- 2.Rd6#
- 2.Qd6#
- 1...Se4
- 2.Qxe5#
- 2.fxe4#
- 1...c3
- 2.Qxe5#
- 2.Qd6#
- 1...e4
- 2.Rd6#
- 2.Qe5#
- 2.Qd6#
- 1...Qxe7!
- threat
- 1.Sf7?
- Keys
- 1.Se4!
- threat
- 2.Sc3#
- 2.Sf6#
- 2.Rd6#
- 2.Qxe5#
- 1...Qxh5
- 2.Sc3#
- 2.Sf6#
- 2.Rd6#
- 1...Qxe7
- 2.Sc3#
- 1...Bxd4
- 2.Sf6#
- 1...Bxc7
- 2.Sc3#
- 2.Sf6#
- 2.Rc5#
- 1...Bxd7
- 2.Rd6#
- 1...Sxe4
- 2.Qxe5#
- 1...gxf3
- 2.Sc3#
- 2.Sf6#
- 2.Qxe5#
- 1...gxh5
- 2.Sc3#
- 2.Sf6#
- 2.Rd6#
- 1...Qf7
- 2.Sc3#
- 2.Rd6#
- 2.Qxe5#
- 1...Qg7
- 2.Sc3#
- 2.Rd6#
- 1...Qh8
- 2.Sc3#
- 2.Rd6#
- 1...Ba5
- 2.Sf6#
- 2.Rc5#
- 2.Qxe5#
- 1...Bc5
- 2.Sc3#
- 2.Sf6#
- 2.Rxc5#
- 2.Qxe5#
- 1...Ba7
- 2.Sc3#
- 2.Sf6#
- 2.Qxe5#
- 1...Sd1
- 2.Sf6#
- 2.Rd6#
- 2.Qxe5#
- 1...Sd3
- 2.Sc3#
- 2.Sf6#
- 2.Rd6#
- 1...c3
- 2.Sxc3#
- 2.Sf6#
- 2.Qxe5#
- 1...g5
- 2.Sc3#
- 2.Sf6#
- 2.Rd6#
- threat
- 1.Se4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- S(b);OGATE::P(D),XS(b)
- P(f);SBLOCK,XP(F)::S(B)
- P(f);::R1(I)
- Tries
- Try
- S(G);P_PINP(f)
- Threat
- DUALS(2)
- Vars
- Q(j);N_SPINP(f),XQ(H)::R1(I)
- Q(j);XS(G)::QAR1(H),XP(f)
- B(h);N_GUARD,XP(J)::R1(I)
- B(l);XB(K)::R1(I)
- B(l);XS(G)::QAR1(H),XP(f)
- P(d);XP(D)::QAR1(H),XP(f)
- P(i);N_SPINP(f),P_PINS(B),XQ(H)::R1(I)
- Q(j);::R1(I)
- B(h);::QAR1(H),XP(f)
- S(b);::R1(I)
- S(b);::QAR1(H),XP(f)
- P(c);::QAR1(H),XP(f)
- P(i);N_SPINP(f),P_PINS(B)::R1(I)
- Refutation
- B(h);XP(F)
- Try
- S(G);P_PINP(f),XQ(j)
- Threat
- DUALS(2)
- Vars
- B(h);XP(F)::S(G)
- B(h);XP(J)::S(G)
- P(i);N_SPINP(f),XQ(H)::S(G)
- S(b);::S(G)
- S(b);::QAR1(H),XP(f)
- P(i);N_SPINP(f)::S(G)
- Refutation
- B(l);XB(K)
- Try
- B(C);XP(f)
- Threat
- DUALS(3)
- Vars
- Q(j);XP(L)::S(B)
- P(i);P_PINS(B),XQ(H)::R1(I)
- B(h);::S(B)
- Refutation
- B(h);XP(F)
- Try
- Q(H);XP(d)
- Threat
- DUALS(3)
- Vars
- Q(j);XP(L)::S(B)
- B(h);XP(F)::QAB1(H)
- Refutation
- S(b);XQ(H)
- Try
- P(J);XR(k)
- Threat
- DUALS(3)
- Vars
- B(h);OGATE::QAR2(J)
- Refutation
- Q(j);XP(L)
- Try
- Actual
- S(G);P_PINP(f)
- Threat
- DUALS(4)
- Vars
- Q(j);XP(L)::S(G)
- B(h);XP(F)::S(G)
- B(l);XB(K)::R1(I)
- S(b);XS(G)::QAR1(H),XP(f)
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).