MESON Chess Problem Database
Problem Display
PID: 262471 (2q5/5R2/3RN1p1/rQ1p4/3pkB1n/2rN3K/2PP2n1/1bbB4 w - - 0 1)
Pankratiev, Aleksandr Nikolaevich
2nd HM., Europe Echecs, 1992
#2
10 + 11
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Qa6
- 2.Sg5#
- 1...Qxe6+
- 2.Rxe6#
- 1...Qb7
- 2.Sg5#
- 1...Qc4
- 2.Sg5#
- 1...Qc5
- 2.Sg5#
- 1...Qc6
- 2.Sg5#
- 1...Qc7
- 2.Sg5#
- 1...Qa8
- 2.Sg5#
- 1...Qb8
- 2.Sg5#
- 1...Qe8
- 2.Sg5#
- 1...Qf8
- 2.Sg5#
- 1...Qg8
- 2.Sg5#
- 1...Qh8
- 2.Sg5#
- 1...Rxc2
- 2.Sf2#
- 1...Rxd3+
- 2.Qxd3#
- 1...Rc4
- 2.Sf2#
- 1...Rc5
- 2.Sf2#
- 1...Rc6
- 2.Sf2#
- 1...Rc7
- 2.Sf2#
- 1...Ra1
- 2.Qxd5#
- 1...Ra2
- 2.Qxd5#
- 1...Ra3
- 2.Qxd5#
- 1...Ra4
- 2.Qxd5#
- 1...Ra6
- 2.Qxd5#
- 1...Ra7
- 2.Qxd5#
- 1...Ra8
- 2.Qxd5#
- 1...Se3
- 2.Sf2#
- 1...Sxf4+
- 2.Rxf4#
- 1...Sf3
- 2.Sf2#
- 1...Sf5
- 2.Sg5#
- 1...Qa6
- Tries
- 1.Kh2?
- threat
- 2.Sf2#
- 2.Sg5#
- 1...Qxe6
- 2.Sf2#
- 2.Rxe6#
- 1...Rxd3
- 2.Sg5#
- 2.Qxd3#
- 1...Sxf4
- 2.Sg5#
- 2.Rxf4#
- 1...Qd8
- 2.Sf2#
- 1...g5
- 2.Sf2#
- 2.Sxg5#
- 1...Sf3+!
- threat
- 1.Kg4?
- threat
- 2.Sf2#
- 1...Qxe6+
- 2.Rxe6#
- 1...Rxd3
- 2.Qxd3#
- 1...Sxf4
- 2.Rxf4#
- 1...Se3+!
- threat
- 1.Bf3+?
- 1...Sxf3
- 2.Sf2#
- 1...Kxf3!
- 1...Sxf3
- 1.Bg4?
- threat
- 2.Sg5#
- 1...Rxd3+
- 2.Qxd3#
- 1...Sxf4+
- 2.Rxf4#
- 1...Qxe6
- 2.Rxe6#
- 1...Sf3
- 2.Sf2#
- 1...g5
- 2.Sxg5#
- 1...Qd8!
- threat
- 1.Bg3?
- threat
- 2.Sf2#
- 1...Qxe6+
- 2.Rxe6#
- 1...Sf4+
- 2.Rxf4#
- 1...Rxd3
- 2.Qxd3#
- 1...Bxd2!
- threat
- 1.Kh2?
- Keys
- 1.Qc4!
- threat
- 2.Qxd4#
- 1...Qxe6+
- 2.Rxe6#
- 1...Rxd3+
- 2.Qxd3#
- 1...Sxf4+
- 2.Rxf4#
- 1...Qxc4
- 2.Sg5#
- 1...Rxc4
- 2.Sf2#
- 1...dxc4
- 2.Rxd4#
- 1...Qc5
- 2.Sg5#
- 1...Qh8
- 2.Sg5#
- 1...Ra4
- 2.Qxd5#
- 1...Sf3
- 2.Sf2#
- 1...Sf5
- 2.Sg5#
- threat
- 1.Qc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 20
- Sets
- Q(k);::S(I)
- Q(k);CHECK,OGATE,XS(I)::R(H),XQ(k)
- R(d);N_PINS(D),P_PINS(I),XP(B)::S(D)
- R(d);CHECK,OGATE,P_PINS(I),XS(D)::QAB1(G),XR(d)
- R(d);N_PINS(D),P_PINS(I)::S(D)
- R(h);N_GUARD::QAB1(G),XP(i)
- S(c);N_PINS(D),P_PINS(I)::S(D)
- S(c);CHECK,OGATE,XB(F)::R1(J),XS(c)
- S(g);N_PINS(D),P_PINS(I)::S(D)
- S(g);::S(I)
- Tries
- Try
- K(E);N_SPINS(D),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- Q(k);::S(D)
- Refutation
- S(g);CHECK
- Try
- K(E);N_SPINS(D),P_SPINS(I),S_FLIGHT
- Threat
- S(D)
- Vars
- Q(k);CHECK,OGATE,XS(I)::R(H),XQ(k)
- R(d);OGATE,XS(D)::QAB1(G),XR(d)
- S(c);OGATE,XB(F)::R1(J),XS(c)
- Refutation
- S(c);CHECK
- Try
- B(A);CHECK,N_SPINS(D),P_SPINS(I)
- Vars
- S(g);SBLOCK,XB(A)::S(D)
- Refutation
- K(f);S_FLIGHT,XB(A)
- Try
- B(A);
- Threat
- S(I)
- Vars
- R(d);CHECK,OGATE,XS(D)::QAB1(G),XR(d)
- S(c);CHECK,OGATE,XB(F)::R1(J),XS(c)
- Q(k);OGATE,P_PINB(A),XS(I)::R(H),XQ(k)
- S(g);N_PINS(D)::S(D)
- P(j);::S(I),XP(j)
- Refutation
- Q(k);
- Try
- B(F);N_SPINS(D),P_SPINS(I)
- Threat
- S(D)
- Vars
- Q(k);CHECK,OGATE,XS(I)::R(H),XQ(k)
- S(c);CHECK,N_GUARD::R1(J),XS(c)
- R(d);OGATE,P_PINB(F),XS(D)::QAB1(G),XR(d)
- Refutation
- B(b);XP(C)
- Try
- Actual
- Q(G);P_PINP(e)
- Threat
- QAR1(G),XP(e)
- Vars
- Q(k);CHECK,OGATE,XS(I)::R(H),XQ(k)
- R(d);CHECK,OGATE,P_PINS(I),XS(D)::QAB1(G),XR(d)
- S(c);CHECK,OGATE,XB(F)::R1(J),XS(c)
- Q(k);N_SPINP(e),XQ(G)::S(I)
- R(d);N_PINS(D),N_SPINP(e),P_PINS(I),XQ(G)::S(D)
- P(i);N_SPINP(e),OGATE,XQ(G)::R1(H),XP(e)
- Q(k);::S(I)
- R(h);N_GUARD::QAB1(G),XP(i)
- S(g);N_PINS(D),P_PINS(I)::S(D)
- S(g);::S(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).