MESON Chess Problem Database
Problem Display
PID: 10185 (8/8/2b4N/2r1R3/1Q2pk2/8/1Bp2PK1/8 w - - 0 1)
Liebeck, Professor Hans
Strydom, Jan
South African Chess Player, 1962
#2
6 + 5
SOLUTION
- SOUND
- Sets
- 1...Rc3
- 2.Rf5#
- 1...Rc4
- 2.Rf5#
- 2.Qf8#
- 1...Ra5
- 2.Qf8#
- 1...Rb5
- 2.Qf8#
- 1...Rd5
- 2.Qf8#
- 2.Qxe4#
- 1...Rxe5
- 2.Bc1#
- 1...Ba4
- 2.Qxe4#
- 1...Bb5
- 2.Qxe4#
- 1...Bd5
- 2.Rf5#
- 1...Bd7
- 2.Qxe4#
- 1...Be8
- 2.Qxe4#
- 1...Rc3
- Tries
- 1.Rxc5?
- threat
- 2.Bc1#
- 2.Rf5#
- 2.Qb8#
- 1...c1Q
- 2.Bxc1#
- 2.Rf5#
- 2.Qb8#
- 1...c1S
- 2.Bxc1#
- 2.Rf5#
- 2.Qb8#
- 1...c1B
- 2.Bxc1#
- 2.Rf5#
- 2.Qb8#
- 1...c1R
- 2.Bxc1#
- 2.Rf5#
- 2.Qb8#
- 1...Bb5
- 2.Bc1#
- 2.Rf5#
- 1...Bb7
- 2.Bc1#
- 2.Rf5#
- 1...Bd7
- 2.Bc1#
- 2.Qb8#
- 1...Bd5!
- threat
- 1.Qa3?
- threat
- 2.Qe3#
- 2.Qg3#
- 1...Rc3
- 2.Rf5#
- 1...c1Q
- 2.Qg3#
- 1...c1B
- 2.Qg3#
- 1...e3+!
- threat
- 1.Qc3?
- threat
- 2.Qe3#
- 2.Qg3#
- 1...Rxc3
- 2.Rf5#
- 1...c1Q
- 2.Qg3#
- 1...c1B
- 2.Qg3#
- 1...e3+!
- threat
- 1.Qxc5?
- threat
- 2.Rf5#
- 2.Qe3#
- 2.Qf8#
- 1...c1Q
- 2.Rf5#
- 2.Qf8#
- 1...c1B
- 2.Rf5#
- 2.Qf8#
- 1...Bd5
- 2.Rf5#
- 2.Qe3#
- 1...Bd7
- 2.Qe3#
- 1...Be8
- 2.Rf5#
- 2.Qe3#
- 1...e3+!
- threat
- 1.Qb3?
- threat
- 2.Qf7#
- 2.Qe3#
- 2.Qg3#
- 1...Rxe5
- 2.Qe3#
- 2.Qg3#
- 1...Rc3
- 2.Rf5#
- 1...c1Q
- 2.Qf7#
- 2.Qg3#
- 1...c1B
- 2.Qf7#
- 2.Qg3#
- 1...Rc4
- 2.Rf5#
- 2.Qe3#
- 2.Qg3#
- 1...Rd5
- 2.Qe3#
- 2.Qg3#
- 1...Bd5
- 2.Rf5#
- 2.Qe3#
- 2.Qg3#
- 1...Bd7
- 2.Qe3#
- 2.Qg3#
- 1...Be8
- 2.Qe3#
- 2.Qg3#
- 1...e3+!
- threat
- 1.Qb8?
- threat
- 2.Rxc5#
- 2.Rd5#
- 2.Rf5#
- 2.Qf8#
- 1...Rxe5
- 2.Qxe5#
- 1...Rc3
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rd5#
- 2.Rf5#
- 2.Rh5#
- 1...Rc4
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rd5#
- 2.Rf5#
- 2.Rh5#
- 2.Qf8#
- 1...Ra5
- 2.Rxa5#
- 2.Rb5#
- 2.Rc5#
- 2.Rd5#
- 2.Rf5#
- 2.Qf8#
- 1...Rb5
- 2.Rxb5#
- 2.Rf5#
- 2.Qf8#
- 1...Rd5
- 2.Rxd5#
- 2.Rf5#
- 2.Qf8#
- 1...Ba4
- 2.Rxc5#
- 2.Rf5#
- 2.Qf8#
- 1...Bb5
- 2.Rxc5#
- 2.Rf5#
- 2.Qf8#
- 1...Bd5
- 2.Rf5#
- 1...Bb7
- 2.Rxc5#
- 2.Rf5#
- 2.Qf8#
- 1...Bd7
- 2.Rxc5#
- 2.Rf5#
- 1...Ba8
- 2.Rxc5#
- 2.Rf5#
- 2.Qf8#
- 1...Be8
- 2.Rxc5#
- 2.Rf5#
- 1...e3+!
- threat
- 1.Rxc5?
- Keys
- 1.Qc4!
- threat
- 2.Qf7#
- 1...Rxc4
- 2.Rf5#
- 1...Rxe5
- 2.Bc1#
- 1...Rd5
- 2.Qxe4#
- 1...Bd5
- 2.Rf5#
- 1...Bd7
- 2.Qxe4#
- 1...Be8
- 2.Qxe4#
- threat
- 1.Qc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- R(d);N_GUARD::R1(E)
- R(d);OGATE::QAR(D)
- R(d);SBLOCK,XR(E)::B(A)
- B(e);N_GUARD::QAR1(D),XP(b)
- B(e);S_CUTR(d)::R1(E)
- Tries
- Try
- R(E);XR(d)
- Threat
- DUALS(3)
- Refutation
- B(e);
- Try
- Q(D);N_PINP(b)
- Threat
- DUALS(2)
- Vars
- R(d);N_GUARD::R1(E)
- P(a);::QAB1(D)
- Refutation
- P(b);CHECK
- Try
- Q(D);N_PINP(b)
- Threat
- DUALS(2)
- Vars
- R(d);N_GUARD,XQ(D)::R1(E)
- P(a);::QAB1(D)
- Refutation
- P(b);CHECK
- Try
- Q(D);N_PINP(b),XR(d)
- Threat
- DUALS(3)
- Vars
- B(e);::QAB1(D)
- Refutation
- P(b);CHECK
- Try
- Q(D);N_PINP(b)
- Threat
- DUALS(3)
- Vars
- R(d);N_GUARD::R1(E)
- Refutation
- P(b);CHECK
- Try
- Q(D);N_PINP(b)
- Threat
- DUALS(4)
- Vars
- R(d);OGATE,P_SPINR(d),XR(E)::QAB1(D),XR(d)
- B(e);::QAB(D)+R(E),DCHECK
- Refutation
- P(b);CHECK
- Try
- Actual
- Q(D);
- Threat
- QAR(D)
- Vars
- R(d);N_GUARD,N_SPINP(b),XQ(D)::R1(E)
- R(d);SBLOCK,XR(E)::B(A)
- R(d);S_CUTB(e)::QAR1(D),XP(b)
- B(e);S_CUTR(d)::R1(E)
- B(e);N_GUARD::QAR1(D),XP(b)
Developed and maintained by Brian Stephenson.
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