MESON Chess Problem Database
Problem Display
PID: 6858 (1K6/5B1b/1p2Rp2/8/2R1pr2/1q6/k7/2Q5 w - - 0 1)
Sola, Pentti Olavi
Hufvudstadsbladet, 1934
#2
5 + 7
| 461 | Schach-Express | 1948 |
| 3979 | Systematic Terminology | 1984 |
| 117 | Suomen Shakki | 1985 |
| 3310 | 2345 Chess Problems | 1997 |
SOLUTION
- SOUND
- Tries
- 1.Rc2+?
- 1...Qb2
- 2.Qxb2#
- 1...Qxc2!
- 1...Qb2
- 1.Ra4+?
- 1...Qa3
- 2.Rxa3#
- 2.Rexe4#
- 2.Re5#
- 2.Rxb6#
- 2.Rc6#
- 2.Rd6#
- 2.Rxf6#
- 2.Re7#
- 2.Re8#
- 1...Qxa4!
- 1...Qa3
- 1.Re5?
- threat
- 2.Rc2#
- 2.Ra4#
- 1...Qxc4
- 2.Bxc4#
- 1...Qc2
- 2.Rxc2#
- 2.Ra4#
- 1...Qa4
- 2.Rc2#
- 2.Rxa4#
- 1...Qb1
- 2.Ra4#
- 1...Qb2
- 2.Ra4#
- 1...Qc3
- 2.Rxc3#
- 2.Ra4#
- 1...Qb4
- 2.Rc2#
- 2.Rxb4#
- 1...Rf2
- 2.Ra4#
- 1...b5
- 2.Rc2#
- 1...e3!
- threat
- 1.Rec6?
- threat
- 2.Rc2#
- 2.Ra4#
- 1...Qxc4
- 2.Bxc4#
- 1...Qc2
- 2.Rxc2#
- 2.Ra4#
- 1...Qa4
- 2.Rc2#
- 2.Rxa4#
- 1...Qb1
- 2.Ra4#
- 1...Qb2
- 2.Ra4#
- 1...Qc3
- 2.Rxc3#
- 2.Ra4#
- 1...Qb4
- 2.Rc2#
- 2.Rxb4#
- 1...Rf2
- 2.Ra4#
- 1...b5
- 2.Rc2#
- 1...e3!
- threat
- 1.Rd6?
- threat
- 2.Rc2#
- 2.Ra4#
- 1...Qxc4
- 2.Bxc4#
- 1...Qc2
- 2.Rxc2#
- 2.Ra4#
- 1...Qa4
- 2.Rc2#
- 2.Rxa4#
- 1...Qb1
- 2.Ra4#
- 1...Qb2
- 2.Ra4#
- 1...Qc3
- 2.Rxc3#
- 2.Ra4#
- 1...Qb4
- 2.Rc2#
- 2.Rxb4#
- 1...Rf2
- 2.Ra4#
- 1...b5
- 2.Rc2#
- 1...e3!
- threat
- 1.Rxf6?
- threat
- 2.Rc2#
- 2.Ra4#
- 1...Qxc4
- 2.Bxc4#
- 1...Qc2
- 2.Rxc2#
- 2.Ra4#
- 1...Qa4
- 2.Rc2#
- 2.Rxa4#
- 1...Qb1
- 2.Ra4#
- 1...Qb2
- 2.Ra4#
- 1...Qc3
- 2.Rxc3#
- 2.Ra4#
- 1...Qb4
- 2.Rc2#
- 2.Rxb4#
- 1...Rf2
- 2.Ra4#
- 1...b5
- 2.Rc2#
- 1...e3!
- threat
- 1.Re7?
- threat
- 2.Rc2#
- 2.Ra4#
- 1...Qxc4
- 2.Bxc4#
- 1...Qc2
- 2.Rxc2#
- 2.Ra4#
- 1...Qa4
- 2.Rc2#
- 2.Rxa4#
- 1...Qb1
- 2.Ra4#
- 1...Qb2
- 2.Ra4#
- 1...Qc3
- 2.Rxc3#
- 2.Ra4#
- 1...Qb4
- 2.Rc2#
- 2.Rxb4#
- 1...Rf2
- 2.Ra4#
- 1...b5
- 2.Rc2#
- 1...e3!
- threat
- 1.Re8?
- threat
- 2.Rc2#
- 2.Ra4#
- 1...Qxc4
- 2.Bxc4#
- 1...Qc2
- 2.Rxc2#
- 2.Ra4#
- 1...Qa4
- 2.Rc2#
- 2.Rxa4#
- 1...Qb1
- 2.Ra4#
- 1...Qb2
- 2.Ra4#
- 1...Qc3
- 2.Rxc3#
- 2.Ra4#
- 1...Qb4
- 2.Rc2#
- 2.Rxb4#
- 1...Rf2
- 2.Ra4#
- 1...b5
- 2.Rc2#
- 1...e3!
- threat
- 1.Rc2+?
- Keys
- 1.Rexe4!
- threat
- 2.Rc2#
- 2.Ra4#
- 1...Qxc4
- 2.Bxc4#
- 1...Rxe4
- 2.Rc2#
- 1...Bxe4
- 2.Ra4#
- 1...Qc2
- 2.Rxc2#
- 2.Ra4#
- 1...Qa4
- 2.Rc2#
- 2.Rxa4#
- 1...Qb1
- 2.Ra4#
- 1...Qb2
- 2.Ra4#
- 1...Qc3
- 2.Rxc3#
- 2.Ra4#
- 1...Qb4
- 2.Rc2#
- 2.Rxb4#
- 1...Rf2
- 2.Ra4#
- 1...b5
- 2.Rc2#
- threat
- 1.Rexe4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- Tries
- Try
- R(B);CHECK
- Vars
- Q(b);N_GUARD,P_SPINQ(b)::QAR1(A),XQ(b)
- Refutation
- Q(b);XR(B)
- Try
- R(B);CHECK
- Refutation
- Q(b);XR(B)
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- Q(b);OGATE,P_SPINQ(b),XR(B)::B(D),XQ(b)
- Q(b);::B(D)+R(B),DCHECK
- R(d);::R(B)
- P(e);::R(B)
- Refutation
- P(c);
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- Q(b);OGATE,P_SPINQ(b),XR(B)::B(D),XQ(b)
- Q(b);::B(D)+R(B),DCHECK
- R(d);::R(B)
- P(e);::R(B)
- Refutation
- P(c);
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- Q(b);OGATE,P_SPINQ(b),XR(B)::B(D),XQ(b)
- Q(b);::B(D)+R(B),DCHECK
- R(d);::R(B)
- P(e);::R(B)
- Refutation
- P(c);
- Try
- R(C);XP(f)
- Threat
- DUALS(2)
- Vars
- Q(b);OGATE,P_SPINQ(b),XR(B)::B(D),XQ(b)
- Q(b);::B(D)+R(B),DCHECK
- R(d);::R(B)
- P(e);::R(B)
- Refutation
- P(c);
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- Q(b);OGATE,P_SPINQ(b),XR(B)::B(D),XQ(b)
- Q(b);::B(D)+R(B),DCHECK
- R(d);::R(B)
- P(e);::R(B)
- Refutation
- P(c);
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- Q(b);OGATE,P_SPINQ(b),XR(B)::B(D),XQ(b)
- Q(b);::B(D)+R(B),DCHECK
- R(d);::R(B)
- P(e);::R(B)
- Refutation
- P(c);
- Try
- Actual
- R(C);XP(c)
- Threat
- DUALS(2)
- Vars
- Q(b);OGATE,P_SPINQ(b),XR(B)::B(D),XQ(b)
- R(d);XR(C)::R(B)
- B(g);XR(C)::R(B)
- Q(b);::B(D)+R(B),DCHECK
- R(d);::R(B)
- P(e);::R(B)
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