MESON Chess Problem Database
Problem Display
PID: 281033 (3R3B/b6K/2p5/1B1N1p2/4k3/r1r3P1/4P3/6QN w - - 0 1)
Keres, Paul P
Helsingin Sanomat, 1959
(First published on Sun May 17 1959)
#2
9 + 6
| 6490 | yacpdb | 2025 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sxc3#
- 1...Ra2
- 2.Sxc3#
- 1...Ra4
- 2.Sxc3#
- 1...Ra5
- 2.Sxc3#
- 1...Ra6
- 2.Sxc3#
- 1...Re3
- 2.Sf2#
- 1...Rc5
- 2.Sf2#
- 2.Qd4#
- 1...Bf2
- 2.Sxf2#
- 1...Be3
- 2.Qg2#
- 1...Bd4
- 2.Qxd4#
- 1...Bb8
- 2.Sf2#
- 2.Qd4#
- 1...cxd5
- 2.Re8#
- 1...c5
- 2.Sf2#
- 1...Ra1
- Tries
- 1.Sf4?
- threat
- 2.Re8#
- 1...Rc5
- 2.Rd4#
- 2.Qd4#
- 1...Bd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Bc5
- 2.Bxc6#
- 1...Bb8
- 2.Rd4#
- 2.Qd4#
- 1...Rxg3!
- threat
- 1.Bxc3?
- threat
- 2.Sf6#
- 2.Bd3#
- 2.Qb1#
- 2.Qg2#
- 1...Bxg1
- 2.Bd3#
- 1...cxb5
- 2.Sf6#
- 2.Qb1#
- 2.Qg2#
- 1...cxd5
- 2.Bd3#
- 2.Re8#
- 1...Bd4
- 2.Qxd4#
- 1...f4
- 2.Bd3#
- 2.Qb1#
- 1...Ra1
- 2.Sf6#
- 2.Bd3#
- 2.Qg2#
- 1...Ra2
- 2.Sf6#
- 2.Bd3#
- 2.Qg2#
- 1...Rb3
- 2.Sf6#
- 2.Bd3#
- 2.Qg2#
- 1...Bf2
- 2.Sxf2#
- 2.Bd3#
- 2.Qb1#
- 2.Qg2#
- 1...Rxc3!
- threat
- 1.Qf2?
- threat
- 2.Qf4#
- 1...Bxf2
- 2.Sxf2#
- 1...f4
- 2.Qxf4#
- 1...Be3
- 2.Qg2#
- 2.Qf3#
- 1...Bb8
- 2.Qd4#
- 1...Rf3!
- threat
- 1.Qe3+?
- 1...Rxe3
- 2.Sf2#
- 1...Bxe3!
- 1...Rxe3
- 1.Qc5?
- threat
- 2.Sf2#
- 2.Sf6#
- 2.Re8#
- 2.Qe7#
- 1...Rxg3
- 2.Sf2#
- 2.Re8#
- 2.Qe7#
- 1...Rxc5
- 2.Sf2#
- 1...cxd5
- 2.Sf2#
- 2.Re8#
- 2.Qe7#
- 1...f4
- 2.Sf6#
- 1...Rf3
- 2.Sf6#
- 2.Re8#
- 2.Qe7#
- 1...Bb8
- 2.Sf2#
- 2.Sf6#
- 2.Qd4#
- 1...Bxc5!
- threat
- 1.Qf1?
- threat
- 2.Qf4#
- 1...f4
- 2.Qxf4#
- 1...Bf2
- 2.Sxf2#
- 1...Be3
- 2.Qg2#
- 2.Qf3#
- 1...Bb8
- 2.Sf2#
- 1...Rf3!
- threat
- 1.Sf4?
- Keys
- 1.Se3!
- threat
- 2.Re8#
- 1...Rxe3
- 2.Sf2#
- 2.Bxc6#
- 1...Bxe3
- 2.Qg2#
- 1...Rc5
- 2.Rd4#
- 1...Bd4
- 2.Rxd4#
- 1...Bc5
- 2.Bxc6#
- 1...Bb8
- 2.Rd4#
- threat
- 1.Se3!
There are these versions: 281034
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 9
- Sets
- R(a);N_GUARD::S(F),XR(b)
- R(b);S_CUTB(f)::S(B)
- B(f);N_GUARD::S(B),XB(f)
- B(f);S_CUTR(b)::QAB(A)
- B(f);N_GUARD::QAR1(A),XB(f)
- P(e);SBLOCK,XS(F)::R(H)
- P(e);S_CUTB(f)::S(B)
- Tries
- Try
- S(F);
- Threat
- R(H)
- Vars
- B(f);S_CUTR(b)::B(E),XP(e)
- Refutation
- R(b);XP(D)
- Try
- B(I);XR(b)
- Threat
- DUALS(4)
- Vars
- B(f);XQ(A)::B(E)
- B(f);N_GUARD::QAR1(A),XB(f)
- Refutation
- R(a);XB(I)
- Try
- Q(A);
- Threat
- QAR1(A)
- Vars
- B(f);XQ(A)::S(B),XB(f)
- P(d);::QAR1(A),XP(d)
- B(f);N_GUARD::QAR1(A)
- Refutation
- R(b);
- Try
- Q(A);CHECK
- Vars
- R(b);XQ(A)::S(B)
- Refutation
- B(f);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(4)
- Vars
- R(b);XQ(A)::S(B)
- P(d);::S(F)
- Refutation
- B(f);XQ(A)
- Try
- Q(A);
- Threat
- QAR1(A)
- Vars
- P(d);::QAR1(A),XP(d)
- B(f);N_GUARD::S(B),XB(f)
- B(f);N_GUARD::S(B)
- Refutation
- R(b);
- Try
- Actual
- S(F);
- Threat
- R(H)
- Vars
- B(f);SBLOCK,XS(F)::QAB(A)
- R(b);S_CUTB(f)::R1(H)
- B(f);N_GUARD::R1(H),XB(f)
- B(f);S_CUTR(b)::B(E),XP(e)
- B(f);N_GUARD::R1(H)
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