MESON Chess Problem Database
Problem Display
PID: 231774 (3N4/7B/K2p4/P3k1P1/5r2/4P3/8/3Q4 w - - 0 1)
Conry, H
Pen & Pencil, 1889
(First published on Sat Jul 20 1889)
#2
7 + 3
| 15239 | Valois Notebooks | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rf1
- 2.Qd4#
- 1...Rf2
- 2.Qd4#
- 1...Rf3
- 2.Qd4#
- 1...Rd4
- 2.Qxd4#
- 1...Rf5
- 2.Qd4#
- 1...Rf6
- 2.Qd4#
- 1...Rf7
- 2.Qd4#
- 1...Rf8
- 2.Qd4#
- 1...Rf1
- Tries
- 1.Qc2?
- 1...Rf1
- 2.Qe4#
- 1...Rf2
- 2.Qe4#
- 1...Rf3
- 2.Qe4#
- 1...Ra4
- 2.Qf5#
- 1...Rb4
- 2.Qf5#
- 1...Rc4
- 2.Qf5#
- 1...Rd4
- 2.Qf5#
- 1...Re4
- 2.Qxe4#
- 1...Rg4
- 2.Qf5#
- 1...Rh4
- 2.Qf5#
- 1...Rf5
- 2.Qxf5#
- 1...Rf6
- 2.Qe4#
- 1...Rf7
- 2.Qe4#
- 1...Rf8
- 2.Qe4#
- 1...d5
- 2.Qc7#
- 1...Kd5!
- 1...Rf1
- 1.Qb3?
- threat
- 2.Sc6#
- 2.Qe6#
- 1...Rf5
- 2.Qe6#
- 1...d5
- 2.Qb8#
- 1...Rf6
- 2.Sc6#
- 1...Rc4!
- threat
- 1.Qf3?
- 1...Re4
- 2.Qxe4#
- 2.Qf5#
- 1...d5
- 2.Qxf4#
- 1...Ra4
- 2.Qf5#
- 1...Rb4
- 2.Qf5#
- 1...Rc4
- 2.Qf5#
- 1...Rd4
- 2.Qf5#
- 1...Rg4
- 2.Qf5#
- 1...Rh4
- 2.Qf5#
- 1...Rf5
- 2.Qxf5#
- 1...Rf6
- 2.Qe4#
- 1...Rf7
- 2.Qe4#
- 1...Rf8
- 2.Qe4#
- 1...Rxf3!
- 1...Re4
- 1.Qa1+?
- 1...Rd4
- 2.Qxd4#
- 1...Kd5!
- 1...Rd4
- 1.Qd3?
- 1...Rd4
- 2.Qf5#
- 2.Qxd4#
- 1...Ra4
- 2.Qf5#
- 1...Rf1
- 2.Qe4#
- 2.Qd4#
- 1...Rf2
- 2.Qe4#
- 2.Qd4#
- 1...Rf3
- 2.Qe4#
- 2.Qd4#
- 1...Rb4
- 2.Qf5#
- 1...Rc4
- 2.Qf5#
- 1...Re4
- 2.Qxe4#
- 1...Rg4
- 2.Qf5#
- 1...Rh4
- 2.Qf5#
- 1...Rf5
- 2.Qxf5#
- 2.Qd4#
- 1...Rf6
- 2.Qe4#
- 2.Qd4#
- 1...Rf7
- 2.Qe4#
- 2.Qd4#
- 1...Rf8
- 2.Qe4#
- 2.Qd4#
- 1...d5!
- 1...Rd4
- 1.Qc2?
- Keys
- 1.Qb1!
- 1...Kd5
- 2.Qb5#
- 1...Rf1
- 2.Qe4#
- 1...Rf2
- 2.Qe4#
- 1...Rf3
- 2.Qe4#
- 1...Ra4
- 2.Qf5#
- 1...Rb4
- 2.Qf5#
- 1...Rc4
- 2.Qf5#
- 1...Rd4
- 2.Qf5#
- 1...Re4
- 2.Qxe4#
- 1...Rg4
- 2.Qf5#
- 1...Rh4
- 2.Qf5#
- 1...Rf5
- 2.Qxf5#
- 1...Rf6
- 2.Qe4#
- 1...Rf7
- 2.Qe4#
- 1...Rf8
- 2.Qe4#
- 1...d5
- 2.Qb8#
- 1...Kd5
- 1.Qb1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 8
- ADDED MATES = 8
- REMOVED MATES = 0
- Sets
- R(a);N_GUARD::QAB1(A)
- R(a);N_GUARD::QAB1(A),XR(a)
- Tries
- Try
- Q(A);
- Vars
- R(a);N_GUARD::QAR1(A)
- R(a);N_GUARD,P_PINP(C)::QAR1(A)
- R(a);N_GUARD::QAR1(A),XR(a)
- P(c);OGATEB,SBLOCK::QAB(A)
- Refutation
- K(b);P-FLIGHT
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(a);::QAR1(A)
- P(c);OGATEB,SBLOCK::QAB(A)
- R(a);::S(G)
- Refutation
- R(a);
- Try
- Q(A);
- Vars
- P(c);SBLOCK::QAB1(A),XR(a)
- R(a);OGATE,P_PINP(C)::QAR1(A)
- R(a);OGATE::QAR1(A)
- R(a);OGATE::QAR1(A),XR(a)
- R(a);N_GUARD::QAR1(A)
- Refutation
- R(a);XQ(A)
- Try
- Q(A);CHECK
- Vars
- R(a);N_GUARD,P_SPINR(a)::QAB1(A),XR(a)
- Refutation
- K(b);P-FLIGHT
- Try
- Q(A);
- Vars
- R(a);N_GUARD,P_PINP(C)::QAR1(A)
- R(a);N_GUARD::QAR1(A)
- R(a);N_GUARD::QAR1(A),XR(a)
- Refutation
- P(c);
- Try
- Actual
- Q(A);
- Vars
- K(b);P-FLIGHT::QAR2(A)
- R(a);N_GUARD::QAR1(A)
- R(a);N_GUARD,P_PINP(C)::QAR1(A)
- R(a);N_GUARD::QAR1(A),XR(a)
- P(c);OGATEB,SBLOCK::QAB(A)
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