MESON Chess Problem Database
Problem Display
PID: 243949 (6Rq/3b1Nb1/4Q2r/5p1p/4pR2/2NPpn1B/1K5p/n3B1kr w - - 0 1)
Gvozdjak, Peter
Pravda, 1981
#2
9 + 13
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rf6
- 2.Se2#
- 1...Sxe1
- 2.Rf1#
- 1...Sd4
- 2.Rf1#
- 1...Sh4
- 2.Rf1#
- 1...Se5
- 2.Se2#
- 2.Rf1#
- 1...Sg5
- 2.Rf1#
- 1...exd3
- 2.Qxe3#
- 1...Rf6
- Tries
- 1.Kb1?
- threat
- 2.Se2#
- 1...exd3
- 2.Qxe3#
- 1...Sd4
- 2.Rf1#
- 1...e2
- 2.Sxe2#
- 1...Sd2+!
- threat
- 1.Kc1?
- threat
- 2.Se2#
- 1...exd3
- 2.Qxe3#
- 1...Sd4
- 2.Rf1#
- 1...e2
- 2.Sxe2#
- 1...Sb3+!
- threat
- 1.Ka2?
- threat
- 2.Se2#
- 1...exd3
- 2.Qxe3#
- 1...Sd4
- 2.Rf1#
- 1...e2
- 2.Sxe2#
- 1...Bxe6+!
- threat
- 1.Ka3?
- threat
- 2.Se2#
- 1...exd3
- 2.Qxe3#
- 1...Sd4
- 2.Rf1#
- 1...e2
- 2.Sxe2#
- 1...Sc2+!
- threat
- 1.Rxf3?
- threat
- 2.Rf1#
- 2.Rg3#
- 1...Rg6
- 2.Rf1#
- 2.Qxg6#
- 1...e2
- 2.Bf2#
- 2.Rg3#
- 1...f4
- 2.Rf1#
- 1...h4
- 2.Rf1#
- 1...exf3!
- threat
- 1.Rxg7+?
- 1...Rg6
- 2.Se2#
- 1...Sg5
- 2.Se2#
- 2.Rf1#
- 2.Rxg5#
- 1...Qxg7!
- 1...Rg6
- 1.Qe5?
- threat
- 2.Se2#
- 1...exd3
- 2.Qxe3#
- 1...Sd4
- 2.Rf1#
- 1...e2
- 2.Sxe2#
- 1...Rb6+!
- threat
- 1.Qf6?
- threat
- 2.Se2#
- 1...Sd4
- 2.Rf1#
- 2.Qg5#
- 1...e2
- 2.Sxe2#
- 1...exd3!
- threat
- 1.Qg6+?
- 1...Sg5
- 2.Rf1#
- 2.Qxg5#
- 1...Rxg6!
- 1...Sg5
- 1.d4?
- threat
- 2.Se2#
- 1...Sxd4
- 2.Rf1#
- 1...e2
- 2.Sxe2#
- 1...Bb5!
- threat
- 1.Kb1?
- Keys
- 1.Se5!
- threat
- 2.Se2#
- 1...exd3
- 2.Sxf3#
- 1...Sd4
- 2.Rf1#
- 1...e2
- 2.Sxe2#
- threat
- 1.Se5!
This is a version
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- R(j);N_PINS(C)::S(C)
- S(f);OGATE,XB(A)::R1(F)
- S(f);N_PINS(C),OGATE::R1(F)
- S(f);OGATE::R1(F)
- S(f);N_SPINB(l),OGATE::R1(F)
- P(g);OGATE,XP(D)::QAB(G),XP(e)
- Tries
- Try
- K(B);N_SPINS(C),P-FLIGHT
- Threat
- S(C)
- Vars
- P(g);OGATE,XP(D)::QAB(G),XP(e)
- S(f);OGATE::R1(F)
- P(e);::S(C),XP(e)
- Refutation
- S(f);CHECK
- Try
- K(B);N_SPINS(C),S_FLIGHT
- Threat
- S(C)
- Vars
- P(g);OGATE,XP(D)::QAB(G),XP(e)
- S(f);OGATE::R1(F)
- P(e);::S(C),XP(e)
- Refutation
- S(a);CHECK
- Try
- K(B);N_SPINS(C),P-FLIGHT
- Threat
- S(C)
- Vars
- P(g);OGATE,XP(D)::QAB(G),XP(e)
- S(f);OGATE::R1(F)
- P(e);::S(C),XP(e)
- Refutation
- B(k);CHECK,XQ(G)
- Try
- K(B);N_SPINS(C),S_FLIGHT
- Threat
- S(C)
- Vars
- P(g);OGATE,XP(D)::QAB(G),XP(e)
- S(f);OGATE::R1(F)
- P(e);::S(C),XP(e)
- Refutation
- S(a);CHECK
- Try
- R(F);XS(f)
- Threat
- DUALS(2)
- Vars
- P(h);::R1(F)
- P(i);::R1(F)
- Refutation
- P(g);XR(F)
- Try
- R(I);CHECK,N_SPINS(C),XB(l)
- Vars
- R(j);P_SPINR(j)::S(C)
- Refutation
- Q(m);P_PINS(C),XR(I)
- Try
- Q(G);N_SPINS(C)
- Threat
- S(C)
- Vars
- P(g);OGATE,XP(D)::QAB(G),XP(e)
- S(f);OGATE::R1(F)
- P(e);::S(C),XP(e)
- Refutation
- R(j);CHECK
- Try
- Q(G);N_SPINS(C)
- Threat
- S(C)
- Vars
- P(e);::S(C),XP(e)
- Refutation
- P(g);XP(D)
- Try
- Q(G);CHECK,N_PINB(l)
- Refutation
- R(j);XQ(G)
- Try
- P(D);N_SPINS(C)
- Threat
- S(C)
- Vars
- S(f);OGATE,XP(D)::R1(F)
- P(e);::S(C),XP(e)
- Refutation
- B(k);
- Try
- Actual
- S(H);N_SPINS(C)
- Threat
- S(C)
- Vars
- P(g);N_GUARD,XP(D)::S(H),XS(f)
- S(f);OGATE::R1(F)
- P(e);::S(C),XP(e)
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).