MESON Chess Problem Database
Problem Display
PID: 255368 (5bBB/1pQ1p2b/1rn1pq2/2p1Rpp1/3k4/8/1n1P1N2/N1R3K1 w - - 0 1)
Slesarenko, Anatoly Vasilevich
Problemist Ukraini, 2021
#2
9 + 13
SOLUTION
- SOUND
- Sets
- 1...Qxe5
- 2.Qd7#
- 1...Qg6
- 2.Qd7#
- 1...Qh6
- 2.Qd7#
- 1...Qf7
- 2.Qd7#
- 1...Rb3
- 2.Sxb3#
- 1...Ra6
- 2.Sb3#
- 1...Sc4
- 2.Sc2#
- 1...Sb4
- 2.Sb3#
- 2.Qxc5#
- 1...Sa5
- 2.Qxc5#
- 1...Sxe5
- 2.Qxc5#
- 1...Sa7
- 2.Qxc5#
- 1...Sb8
- 2.Qxc5#
- 1...Sd8
- 2.Qxc5#
- 1...c4
- 2.Sc2#
- 1...Qxe5
- Tries
- 1.Bxe6?
- threat
- 2.Sc2#
- 2.Rd5#
- 1...Qxe5
- 2.Sc2#
- 2.Qd7#
- 1...Sxe5
- 2.Sc2#
- 2.Qxc5#
- 1...Sb4
- 2.Sb3#
- 2.Qxc5#
- 1...f4
- 2.Rd5#
- 1...Qxe6!
- threat
- 1.Bxf6?
- threat
- 2.Qd7#
- 1...Sxe5
- 2.Qxe5#
- 2.Qxc5#
- 1...Sc4
- 2.Sc2#
- 1...Sb4
- 2.Sb3#
- 2.Qxc5#
- 1...Sa5
- 2.Qxc5#
- 1...Sa7
- 2.Qxc5#
- 1...Sb8
- 2.Qxc5#
- 1...Sd8
- 2.Qxc5#
- 1...exf6!
- threat
- 1.Rc3?
- threat
- 2.Sc2#
- 1...Qxe5
- 2.Qd7#
- 1...Sxe5
- 2.Qxc5#
- 1...Sb4
- 2.Sb3#
- 2.Qxc5#
- 1...f4!
- threat
- 1.Rc4+?
- 1...Sxc4
- 2.Sc2#
- 1...Kxc4!
- 1...Sxc4
- 1.Rcxc5?
- threat
- 2.Sc2#
- 2.Qd7#
- 1...Sxe5
- 2.Sc2#
- 1...Sc4
- 2.Sc2#
- 1...Sb4
- 2.Sb3#
- 1...Sa5
- 2.Sc2#
- 1...Sa7
- 2.Sc2#
- 1...Sb8
- 2.Sc2#
- 1...Sd8
- 2.Sc2#
- 1...f4
- 2.Qd7#
- 1...Qxe5!
- threat
- 1.Re3?
- threat
- 2.Qd7#
- 1...Kd5
- 2.Qd7#
- 1...Sc4
- 2.Rd3#
- 1...Sb4
- 2.Qxc5#
- 1...Sa5
- 2.Qxc5#
- 1...Se5
- 2.Qxc5#
- 1...Sa7
- 2.Qxc5#
- 1...Sb8
- 2.Qxc5#
- 1...Sd8
- 2.Qxc5#
- 1...e5
- 2.Sc2#
- 1...c4!
- threat
- 1.Re4+?
- 1...Kd5
- 2.Qd7#
- 1...fxe4!
- 1...Kd5
- 1.Rxf5?
- threat
- 2.Qd7#
- 1...exf5
- 2.Sc2#
- 1...Se5
- 2.Qxc5#
- 1...Sc4
- 2.Sc2#
- 1...Sb4
- 2.Sb3#
- 2.Qxc5#
- 1...Sa5
- 2.Qxc5#
- 1...Sa7
- 2.Qxc5#
- 1...Sb8
- 2.Qxc5#
- 1...Sd8
- 2.Qxc5#
- 1...e5
- 2.Sc2#
- 1...Bxf5!
- threat
- 1.Bxe6?
- Keys
- 1.Rexc5!
- threat
- 2.Qd7#
- 1...Sc4
- 2.R1xc4#
- 1...Sb4
- 2.Sb3#
- 1...Sa5
- 2.Sc2#
- 1...Se5
- 2.Sc2#
- 1...Sa7
- 2.Sc2#
- 1...Sb8
- 2.Sc2#
- 1...Sd8
- 2.Sc2#
- 1...e5
- 2.Rd5#
- threat
- 1.Rexc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 6
- ADDED MATES = 2
- REMOVED MATES = 7
- Sets
- Q(i);P_SPINQ(i),XR(F)::QAR(G)
- Q(i);::QAR(G)
- R(f);N_GUARD::S(A),XR(f)
- R(f);N_GUARD::S(A)
- S(a);SBLOCK::S(A)
- S(g);OGATE::QAB1(G),XP(c)
- S(g);OGATE,XR(F)::QAB1(G),XP(c)
- P(c);SBLOCK::S(A)
- Tries
- Try
- B(H);XP(h)
- Threat
- DUALS(2)
- Vars
- P(d);::R1(F)
- Refutation
- Q(i);XB(H)
- Try
- B(I);XQ(i)
- Threat
- QAR(G)
- Vars
- S(a);SBLOCK::S(A)
- S(g);OGATE::QAB1(G),XP(c)
- Refutation
- P(k);XB(I)
- Try
- R(B);
- Threat
- S(A)
- Vars
- Q(i);P_SPINQ(i),XR(F)::QAR(G)
- S(g);OGATE,XR(F)::QAB1(G),XP(c)
- Refutation
- P(d);
- Try
- R(B);CHECK
- Vars
- S(a);SBLOCK,XR(B)::S(A)
- Refutation
- K(b);P-FLIGHT,P_SPINP(h),XR(B)
- Try
- R(B);XP(c)
- Threat
- DUALS(2)
- Vars
- S(g);XR(F)::S(A)
- S(a);::S(A)
- S(g);S_CUTR(f)::S(A)
- S(g);::S(A)
- P(d);::QAR(G)
- Refutation
- Q(i);P_SPINQ(i),XR(F)
- Try
- R(F);P_PINQ(i)
- Threat
- QAR(G)
- Vars
- K(b);N_SPINQ(i),P-FLIGHT,P_SPINP(h)::QAR2(G)
- S(a);N_GUARD::R1(F)
- S(g);OGATE::QAB1(G),XP(c)
- S(g);N_SPINQ(i),OGATE::QAB1(G),XP(c)
- P(h);N_SPINQ(i)::S(A)
- Refutation
- P(c);
- Try
- R(F);CHECK,P_PINQ(i)
- Vars
- K(b);N_SPINQ(i),P-FLIGHT,P_SPINP(h)::QAR2(G)
- Refutation
- P(d);XR(F)
- Try
- R(F);P_PINQ(i),XP(d)
- Threat
- QAR(G)
- Vars
- P(h);XR(F)::S(A)
- S(g);N_SPINQ(i),OGATE::QAB1(G),XP(c)
- S(a);SBLOCK::S(A)
- S(g);OGATE::QAB1(G),XP(c)
- P(h);N_SPINQ(i)::S(A)
- Refutation
- B(l);XR(F)
- Try
- Actual
- R(F);P_PINQ(i),XP(c)
- Threat
- QAR(G)
- Vars
- S(a);N_GUARD::R1(B),XS(a)
- S(g);S_CUTR(f)::S(A)
- S(g);::S(A)
- S(g);N_SPINQ(i)::S(A)
- P(h);N_GUARD,N_SPINQ(i)::R1(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).