MESON Chess Problem Database
Problem Display
PID: 99146 (1QB2N2/b1pRp3/5N1K/r3k1Pn/2n1P2R/4rPp1/3P4/6B1 w - - 0 1)
Gergely, Istvan
Magyar Sakkelet, 1952
#2
12 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Rd5#
- 1...Ra2
- 2.Rd5#
- 1...Ra3
- 2.Rd5#
- 1...Ra4
- 2.Rd5#
- 1...Rc5
- 2.d4#
- 1...Rd5
- 2.Rxd5#
- 1...Ra6
- 2.Rd5#
- 1...Bc5
- 2.Rd5#
- 1...Bxb8
- 2.d4#
- 1...Sb2
- 2.Qxc7#
- 1...Sxd2
- 2.Qxc7#
- 1...Sa3
- 2.Qxc7#
- 1...Sb6
- 2.Qxc7#
- 2.d4#
- 1...Sf4
- 2.Sg4#
- 1...Sg7
- 2.f4#
- 1...e6
- 2.Sg6#
- 1...Ra1
- Tries
- 1.Rxe7+?
- 1...Kd6
- 2.Qxc7#
- 1...Kd4!
- 1...Kd6
- 1.Rd8?
- threat
- 2.Sg6#
- 1...Rd5
- 2.Rxd5#
- 1...Sf4
- 2.Sg4#
- 1...Sd6!
- threat
- 1.Qb5+?
- 1...Bc5
- 2.Rd5#
- 2.d4#
- 1...c5
- 2.Rd5#
- 2.d4#
- 1...Rxb5!
- 1...Bc5
- 1.Qb6?
- threat
- 2.Sg6#
- 2.Rxe7#
- 2.Qe6#
- 2.d4#
- 1...Rxe4
- 2.Rxe7#
- 2.Qe6#
- 1...Sxd2
- 2.Sg6#
- 2.Rxe7#
- 2.Qxc7#
- 2.Qe6#
- 1...Sxb6
- 2.d4#
- 1...cxb6
- 2.d4#
- 1...exf6
- 2.Sg6#
- 2.Re7#
- 2.Qe6#
- 2.d4#
- 1...Rd3
- 2.Sg6#
- 2.Rxe7#
- 2.Qe6#
- 1...Rc5
- 2.Sg6#
- 2.Qe6#
- 2.d4#
- 1...Rd5
- 2.Sg6#
- 2.Rxd5#
- 2.Rxe7#
- 1...Ra6
- 2.Sg6#
- 2.Rd5#
- 2.Rxe7#
- 2.d4#
- 1...Sd6
- 2.Rxe7#
- 2.d4#
- 1...Sf4
- 2.Sg4#
- 2.d4#
- 1...Sg7
- 2.Sg6#
- 2.d4#
- 2.f4#
- 1...c5
- 2.Sg6#
- 2.Rd5#
- 2.Qe6#
- 1...c6
- 2.d4#
- 1...e6
- 2.Sg6#
- 2.Qxe6#
- 2.d4#
- 1...Bxb6!
- threat
- 1.Rxe7+?
- Keys
- 1.Qb4!
- threat
- 2.Qxe7#
- 1...Rxe4
- 2.Rxe7#
- 1...exf6
- 2.Qe7#
- 1...Rd5
- 2.Rxd5#
- 1...Rc5
- 2.d4#
- 1...Ra6
- 2.Rd5#
- 1...Bc5
- 2.Rd5#
- 1...Sd6
- 2.Rxe7#
- 1...Sf4
- 2.Sg4#
- 1...Sg7
- 2.f4#
- 1...c5
- 2.Rd5#
- 1...e6
- 2.Sg6#
- threat
- 1.Qb4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 8
- Sets
- R(d);N_GUARD::R1(I)
- R(d);S_CUTB(g)::P(B)
- R(d);N_GUARD::R1(I),XR(d)
- R(d);N_GUARD,P_PINS(G)::R1(I)
- B(g);S_CUTR(d)::R1(I)
- B(g);N_GUARD,N_SPINP(h),XQ(J)::P(B)
- S(c);N_GUARD::QAB(J),XP(h)
- S(c);N_GUARD,XP(B)::QAB(J),XP(h)
- S(f);SBLOCK::S(G)
- S(f);N_GUARD::P(C)
- P(i);SBLOCK::S(L)
- Tries
- Try
- R(I);CHECK,XP(i)
- Vars
- K(e);S_FLIGHT::QAB1(J),XP(h)
- Refutation
- K(e);N_SPINP(h),P_SPINR(a),S_FLIGHT
- Try
- R(I);
- Threat
- S(L)
- Vars
- R(d);N_GUARD::R1(I),XR(d)
- S(f);SBLOCK::S(G)
- Refutation
- S(c);N_SPINP(h)
- Try
- Q(J);CHECK,N_PINP(h)
- Refutation
- R(d);XQ(J)
- Try
- Q(J);N_PINP(h)
- Threat
- DUALS(4)
- Vars
- S(c);XQ(J)::P(B)
- P(h);XQ(J)::P(B)
- P(h);::P(B)
- Refutation
- B(g);XQ(J)
- Try
- Actual
- Q(J);N_PINP(h)
- Threat
- QAR2(J),XP(i)
- Vars
- R(a);XP(D)::R(I),XP(i)
- P(i);XS(G)::QAR2(J)
- R(d);N_GUARD::R1(I),XR(d)
- R(d);S_CUTB(g)::P(B)
- R(d);N_GUARD,P_PINS(G)::R1(I)
- B(g);S_CUTR(d)::R1(I)
- S(c);::R(I),XP(i)
- S(f);SBLOCK::S(G)
- S(f);N_GUARD::P(C)
- P(h);S_CUTR(d)::R1(I)
- P(i);SBLOCK::S(L)
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).