MESON Chess Problem Database
Problem Display
PID: 2494 (1K6/4pB2/1p2Q3/4P3/1k6/R3B3/1r6/8 w - - 0 1)
Loyd, Sam
Source?, 0000
#2
6 + 4
| 1679 | American Chess Nuts | 1868 |
| 16 | Chess Amateur (The) | 1906 |
| 5206 | Sam Loyd and His Chess Problems | 1913 |
SOLUTION
- SOUND
- Sets
- 1...Kb5
- 2.Qc4#
- 2.Qxb6#
- 1...Ra2
- 2.Qb3#
- 1...Rc2
- 2.Qb3#
- 1...Rd2
- 2.Qb3#
- 1...Re2
- 2.Qb3#
- 1...Rf2
- 2.Qb3#
- 1...Rg2
- 2.Qb3#
- 1...Rh2
- 2.Qb3#
- 1...Rb3
- 2.Qxb3#
- 1...b5
- 2.Qxe7#
- 1...Kb5
- Tries
- 1.Bc5+?
- 1...Kb5
- 2.Qxb6#
- 1...Kxc5
- 2.Qc4#
- 1...bxc5!
- 1...Kb5
- 1.Ra4+?
- 1...Kc3
- 2.Qc4#
- 1...Kb5
- 2.Be8#
- 2.Qc4#
- 2.Qd7#
- 1...Kxa4!
- 1...Kc3
- 1.Ra6?
- threat
- 2.Qc4#
- 1...Kc3
- 2.Qc4#
- 1...Kb5
- 2.Qc4#
- 2.Qxb6#
- 1...Rc2
- 2.Qb3#
- 1...b5!
- threat
- 1.Ra7?
- threat
- 2.Qc4#
- 1...Kc3
- 2.Qc4#
- 1...Kb5
- 2.Qc4#
- 2.Qxb6#
- 1...Rc2
- 2.Qb3#
- 1...b5!
- threat
- 1.Ra8?
- threat
- 2.Qc4#
- 1...Kc3
- 2.Qc4#
- 1...Kb5
- 2.Qc4#
- 2.Qxb6#
- 1...Rc2
- 2.Qb3#
- 1...b5!
- threat
- 1.Qg4+?
- 1...Kb5
- 2.Be8#
- 2.Qa4#
- 2.Qc4#
- 1...Kxa3!
- 1...Kb5
- 1.Qc6?
- threat
- 2.Ra4#
- 2.Qa4#
- 1...Ra2
- 2.Qa4#
- 1...Rb3
- 2.Ra4#
- 1...b5
- 2.Bc5#
- 2.Qc3#
- 2.Qc5#
- 1...e6
- 2.Qa4#
- 1...Kxa3!
- threat
- 1.Qd6+?
- 1...Kb5
- 2.Qxb6#
- 1...exd6!
- 1...Kb5
- 1.Bc5+?
- Keys
- 1.Bc1!
- 1...Kxa3
- 2.Qb3#
- 1...Kb5
- 2.Qc4#
- 1...Kc5
- 2.Qc4#
- 1...Rb1
- 2.Qc4#
- 2.Qxb6#
- 1...Ra2
- 2.Qc4#
- 2.Qxb6#
- 1...Rc2
- 2.Qxb6#
- 1...Rd2
- 2.Qc4#
- 2.Qxb6#
- 1...Re2
- 2.Qc4#
- 2.Qxb6#
- 1...Rf2
- 2.Qc4#
- 2.Qxb6#
- 1...Rg2
- 2.Qc4#
- 2.Qxb6#
- 1...Rh2
- 2.Qc4#
- 2.Qxb6#
- 1...Rb3
- 2.Qc4#
- 1...b5
- 2.Qxe7#
- 1...Kxa3
- 1.Bc1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 6
- Sets
- R(a);N_GUARD::QAR1(D)
- R(a);N_GUARD::QAR1(D),XR(a)
- P(c);SBLOCK::QAB(D),XP(d)
- Tries
- Try
- B(B);CHECK
- Vars
- K(b);P-FLIGHT::QAR1(D),XP(c)
- K(b);S_FLIGHT,XB(B)::QAR1(D)
- Refutation
- P(c);XB(B)
- Try
- R(A);CHECK
- Vars
- K(b);S_FLIGHT::QAR1(D)
- Refutation
- K(b);P-FLIGHT,XR(A)
- Try
- R(A);
- Threat
- QAR1(D)
- Vars
- K(b);S_FLIGHT::QAR1(D)
- R(a);N_GUARD::QAR1(D)
- Refutation
- P(c);
- Try
- R(A);
- Threat
- QAR1(D)
- Vars
- K(b);S_FLIGHT::QAR1(D)
- R(a);N_GUARD::QAR1(D)
- Refutation
- P(c);
- Try
- R(A);
- Threat
- QAR1(D)
- Vars
- K(b);S_FLIGHT::QAR1(D)
- R(a);N_GUARD::QAR1(D)
- Refutation
- P(c);
- Try
- Q(D);CHECK
- Refutation
- K(b);S_FLIGHT,XR(A)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- R(a);::QAR1(D)
- R(a);::R1(A)
- P(d);::QAR1(D)
- Refutation
- K(b);S_FLIGHT,XR(A)
- Try
- Q(D);CHECK
- Vars
- K(b);P-FLIGHT::QAR1(D),XP(c)
- Refutation
- P(d);XQ(D)
- Try
- Actual
- B(B);
- Vars
- K(b);P_SPINR(a),S_FLIGHT,XR(A)::QAR1(D)
- K(b);P-FLIGHT::QAB1(D)
- K(b);S_FLIGHT::QAR1(D)
- R(a);::QAR2(D),XP(c)
- R(a);::QAR1(D)
- P(c);SBLOCK::QAB(D),XP(d)
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