MESON Chess Problem Database
Problem Display
PID: 15739 (3q1r1n/B1pp2pK/8/1B6/2R4p/3R4/b2P1PNQ/r1b2kN1 w - - 0 1)
Lacny, Ludovit
2nd Prize, Pravda - Tirnavia, 1987
#2
10 + 11
| 3335 | Cyclone | 2000 |
SOLUTION
- SOUND
- Sets
- 1...Bb1
- 2.Rxc1#
- 1...Bb1
- Tries
- 1.Ra3?
- threat
- 2.Rxc1#
- 1...Bb1+
- 2.Rc2#
- 1...Bxd2
- 2.Rc1#
- 1...Bxa3
- 2.Rc1#
- 1...Bxc4
- 2.Bxc4#
- 1...Bb2
- 2.Rc1#
- 1...c5!
- threat
- 1.Rb3?
- threat
- 2.Rxc1#
- 2.Rc2#
- 2.Rcc3#
- 2.Ra4#
- 2.Rcb4#
- 2.Re4#
- 2.Rf4#
- 2.Rg4#
- 2.Rxh4#
- 2.Rc6#
- 2.Rxc7#
- 1...Bb1+
- 2.Rc2#
- 1...Rxf2
- 2.Rxc1#
- 2.Rf4#
- 1...Bxd2
- 2.Rc1#
- 2.Rc2#
- 2.Rcc3#
- 2.Ra4#
- 2.Rcb4#
- 2.Re4#
- 2.Rf4#
- 2.Rg4#
- 2.Rxh4#
- 2.Rc6#
- 2.Rxc7#
- 1...Bxb3
- 2.Rxc1#
- 1...Qg5
- 2.Rxc1#
- 1...Qe7
- 2.Rxc1#
- 2.Re4#
- 1...Qb8
- 2.Rxc1#
- 1...Qe8
- 2.Rxc1#
- 2.Re4#
- 1...Rf3
- 2.Rxc1#
- 1...Rf4
- 2.Rxc1#
- 2.Re4#
- 2.Rxf4#
- 1...Rf5
- 2.Rxc1#
- 1...Re8
- 2.Rxc1#
- 2.Re4#
- 1...Bb2
- 2.Rc1#
- 2.Rc2#
- 2.Rcc3#
- 2.Ra4#
- 2.Rcb4#
- 2.Re4#
- 2.Rf4#
- 2.Rg4#
- 2.Rxh4#
- 2.Rc6#
- 2.Rxc7#
- 1...Ba3
- 2.Rc1#
- 2.Rc2#
- 2.Rcc3#
- 2.Ra4#
- 2.Rcb4#
- 2.Re4#
- 2.Rf4#
- 2.Rg4#
- 2.Rxh4#
- 2.Rc6#
- 2.Rxc7#
- 1...h3
- 2.Rxc1#
- 2.Rc2#
- 2.Rcc3#
- 2.Ra4#
- 2.Rcb4#
- 2.Re4#
- 2.Rf4#
- 2.Rg4#
- 2.Rh4#
- 2.Rc6#
- 2.Rxc7#
- 1...c6
- 2.Rxc1#
- 2.Rxc6#
- 1...c5!
- threat
- 1.Rg3?
- threat
- 2.Rxc1#
- 1...Bb1+
- 2.Rc2#
- 1...Bxd2
- 2.Rc1#
- 1...Bxc4
- 2.Bxc4#
- 1...Bb2
- 2.Rc1#
- 1...Ba3
- 2.Rc1#
- 1...c5!
- threat
- 1.Rh3?
- threat
- 2.Rxc1#
- 1...Bb1+
- 2.Rc2#
- 1...Bxd2
- 2.Rc1#
- 1...Bxc4
- 2.Bxc4#
- 1...Bb2
- 2.Rc1#
- 1...Ba3
- 2.Rc1#
- 1...c5!
- threat
- 1.Rd5?
- threat
- 2.Rxc1#
- 1...Bb1+
- 2.Rc2#
- 1...Bxd2
- 2.Rc1#
- 1...Bxc4
- 2.Bxc4#
- 1...Bb2
- 2.Rc1#
- 1...Ba3
- 2.Rc1#
- 1...c5!
- threat
- 1.Rd6?
- threat
- 2.Rxc1#
- 1...Bb1+
- 2.Rc2#
- 1...Bxd2
- 2.Rc1#
- 1...Bxc4
- 2.Bxc4#
- 1...Bb2
- 2.Rc1#
- 1...Ba3
- 2.Rc1#
- 1...c5!
- threat
- 1.Rxd7?
- threat
- 2.Rxc1#
- 1...Bb1+
- 2.Rc2#
- 1...Bxd2
- 2.Rc1#
- 1...Bxc4
- 2.Bxc4#
- 1...Bb2
- 2.Rc1#
- 1...Ba3
- 2.Rc1#
- 1...c5!
- threat
- 1.f4?
- threat
- 2.Rf3#
- 1...Rxf4
- 2.Rxf4#
- 1...Bb1
- 2.Rxc1#
- 1...Qa8!
- threat
- 1.Ra3?
- Keys
- 1.Rf3!
- threat
- 2.Rxc1#
- 1...Bb1+
- 2.Rc2#
- 1...Bxd2
- 2.Rc1#
- 1...Bxc4
- 2.Bxc4#
- 1...Bb2
- 2.Rc1#
- 1...Ba3
- 2.Rc1#
- threat
- 1.Rf3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- B(d);P_PINR(F),S_CUTR(a)::R(G),XB(b)
- Tries
- Try
- R(F);
- Threat
- B(H)+R(G),DCHECK,XB(b)
- Vars
- B(d);CHECK,N_GUARD::B(H)+R(G)
- B(b);XP(B)::B(H)+R(G),DCHECK
- B(b);XR(F)::B(H)+R(G),DCHECK
- B(d);OGATE,P_SPINB(d),XR(G)::B(H),XB(d)
- B(b);::B(H)+R(G),DCHECK
- Refutation
- P(f);
- Try
- R(F);
- Threat
- DUALS(11)
- Vars
- B(d);CHECK::B(H)+R(G)
- B(d);XR(F)::B(H)+R(G),DCHECK,XB(b)
- Q(i);::B(H)+R(G),DCHECK,XB(b)
- R(j);::B(H)+R(G),DCHECK,XB(b)
- Refutation
- P(f);
- Try
- R(F);
- Threat
- B(H)+R(G),DCHECK,XB(b)
- Vars
- B(d);CHECK,N_GUARD::B(H)+R(G)
- B(b);XP(B)::B(H)+R(G),DCHECK
- B(d);OGATE,P_SPINB(d),XR(G)::B(H),XB(d)
- B(b);::B(H)+R(G),DCHECK
- Refutation
- P(f);
- Try
- R(F);
- Threat
- B(H)+R(G),DCHECK,XB(b)
- Vars
- B(d);CHECK,N_GUARD::B(H)+R(G)
- B(b);XP(B)::B(H)+R(G),DCHECK
- B(d);OGATE,P_SPINB(d),XR(G)::B(H),XB(d)
- B(b);::B(H)+R(G),DCHECK
- Refutation
- P(f);
- Try
- R(F);
- Threat
- B(H)+R(G),DCHECK,XB(b)
- Vars
- B(d);CHECK,N_GUARD::B(H)+R(G)
- B(b);XP(B)::B(H)+R(G),DCHECK
- B(d);OGATE,P_SPINB(d),XR(G)::B(H),XB(d)
- B(b);::B(H)+R(G),DCHECK
- Refutation
- P(f);
- Try
- R(F);
- Threat
- B(H)+R(G),DCHECK,XB(b)
- Vars
- B(d);CHECK,N_GUARD::B(H)+R(G)
- B(b);XP(B)::B(H)+R(G),DCHECK
- B(d);OGATE,P_SPINB(d),XR(G)::B(H),XB(d)
- B(b);::B(H)+R(G),DCHECK
- Refutation
- P(f);
- Try
- R(F);XP(g)
- Threat
- B(H)+R(G),DCHECK,XB(b)
- Vars
- B(d);CHECK,N_GUARD::B(H)+R(G)
- B(b);XP(B)::B(H)+R(G),DCHECK
- B(d);OGATE,P_SPINB(d),XR(G)::B(H),XB(d)
- B(b);::B(H)+R(G),DCHECK
- Refutation
- P(f);
- Try
- P(C);
- Threat
- R(F)
- Vars
- R(j);OGATE,XP(C)::R(G),XR(j)
- B(d);P_PINR(F),S_CUTR(a)::R(G),XB(b)
- Refutation
- Q(i);
- Try
- Actual
- R(F);
- Threat
- B(H)+R(G),DCHECK,XB(b)
- Vars
- B(d);CHECK,N_GUARD::B(H)+R(G)
- B(b);XP(B)::B(H)+R(G),DCHECK
- B(d);OGATE,P_SPINB(d),XR(G)::B(H),XB(d)
- B(b);::B(H)+R(G),DCHECK
Developed and maintained by Brian Stephenson.
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