MESON Chess Problem Database
Problem Display
PID: 234370 (4Q3/2N2P1p/2PrBK2/pP6/Rb2kp1p/R4N2/P5P1/8 w - - 0 1)
Ellerman, Arnoldo
Revista Romana de Sah, 1935
#2
12 + 7
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rd1
- 2.Bh3#
- 2.Bg4#
- 2.Bd5#
- 2.Bf5#
- 2.Bd7#
- 2.Bc8#
- 1...Rd2
- 2.Bh3#
- 2.Bg4#
- 2.Bd5#
- 2.Bf5#
- 2.Bd7#
- 2.Bc8#
- 1...Rd3
- 2.Bb3#
- 2.Bh3#
- 2.Bg4#
- 2.Bd5#
- 2.Bf5#
- 2.Bd7#
- 2.Bc8#
- 1...Rd4
- 2.Sg5#
- 2.Bd5#
- 2.Bf5#
- 1...Rd5
- 2.Bxd5#
- 2.Bf5#
- 1...Rxc6
- 2.Qxc6#
- 1...Rxe6+
- 2.Qxe6#
- 1...Rd7
- 2.Bd5#
- 2.Bf5#
- 2.Bxd7#
- 1...Rd8
- 2.Bd5#
- 2.Bf5#
- 1...Rd1
- Tries
- 1.Kg5?
- threat
- 2.Bd5#
- 2.Bf5#
- 1...Rd5+
- 2.Bxd5#
- 2.Bf5#
- 1...Rxe6
- 2.Qxe6#
- 1...h6+!
- threat
- 1.Rxb4+?
- 1...Rd4
- 2.Sd2#
- 2.Sg5#
- 2.Bh3#
- 2.Bc4#
- 2.Bg4#
- 2.Bd5#
- 2.Bf5#
- 2.Bd7#
- 2.Bc8#
- 2.Rxd4#
- 1...axb4!
- 1...Rd4
- 1.f8Q?
- 1...Rxe6+
- 2.Qxe6#
- 1...Rxc6
- 2.Qxc6#
- 1...Rd3
- 2.Bb3#
- 2.Bh3#
- 2.Bg4#
- 2.Bd5#
- 2.Bf5#
- 2.Bd7#
- 2.Bf7#
- 2.Bc8#
- 2.Bg8#
- 1...Rd1
- 2.Bh3#
- 2.Bg4#
- 2.Bd5#
- 2.Bf5#
- 2.Bd7#
- 2.Bf7#
- 2.Bc8#
- 2.Bg8#
- 1...Rd2
- 2.Bh3#
- 2.Bg4#
- 2.Bd5#
- 2.Bf5#
- 2.Bd7#
- 2.Bf7#
- 2.Bc8#
- 2.Bg8#
- 1...Rd4
- 2.Sg5#
- 2.Bd5#
- 2.Bf5#
- 1...Rd5
- 2.Bxd5#
- 2.Bf5#
- 1...Rd7
- 2.Bd5#
- 2.Bf5#
- 2.Bxd7#
- 1...Rd8
- 2.Bd5#
- 2.Bf5#
- 1...h5
- 2.Qg6#
- 1...h6
- 2.Qg6#
- 1...h3!
- 1...Rxe6+
- 1.f8S?
- 1...Rxe6+
- 2.Qxe6#
- 1...Rxc6
- 2.Qxc6#
- 1...Rd3
- 2.Bb3#
- 2.Bh3#
- 2.Bg4#
- 2.Bd5#
- 2.Bf5#
- 2.Bd7#
- 2.Bf7#
- 2.Bc8#
- 2.Bg8#
- 1...Rd1
- 2.Bh3#
- 2.Bg4#
- 2.Bd5#
- 2.Bf5#
- 2.Bd7#
- 2.Bf7#
- 2.Bc8#
- 2.Bg8#
- 1...Rd2
- 2.Bh3#
- 2.Bg4#
- 2.Bd5#
- 2.Bf5#
- 2.Bd7#
- 2.Bf7#
- 2.Bc8#
- 2.Bg8#
- 1...Rd4
- 2.Sg5#
- 2.Bd5#
- 2.Bf5#
- 1...Rd5
- 2.Bxd5#
- 2.Bf5#
- 1...Rd7
- 2.Bd5#
- 2.Bf5#
- 2.Bxd7#
- 1...Rd8
- 2.Bd5#
- 2.Bf5#
- 1...h5
- 2.Qg6#
- 1...h6
- 2.Qg6#
- 1...h3!
- 1...Rxe6+
- 1.f8B?
- 1...Rxe6+
- 2.Qxe6#
- 1...Rxc6
- 2.Qxc6#
- 1...Rd3
- 2.Bb3#
- 2.Bh3#
- 2.Bg4#
- 2.Bd5#
- 2.Bf5#
- 2.Bd7#
- 2.Bf7#
- 2.Bc8#
- 2.Bg8#
- 1...Rd1
- 2.Bh3#
- 2.Bg4#
- 2.Bd5#
- 2.Bf5#
- 2.Bd7#
- 2.Bf7#
- 2.Bc8#
- 2.Bg8#
- 1...Rd2
- 2.Bh3#
- 2.Bg4#
- 2.Bd5#
- 2.Bf5#
- 2.Bd7#
- 2.Bf7#
- 2.Bc8#
- 2.Bg8#
- 1...Rd4
- 2.Sg5#
- 2.Bd5#
- 2.Bf5#
- 1...Rd5
- 2.Bxd5#
- 2.Bf5#
- 1...Rd7
- 2.Bd5#
- 2.Bf5#
- 2.Bxd7#
- 1...Rd8
- 2.Bd5#
- 2.Bf5#
- 1...h5
- 2.Qg6#
- 1...h6
- 2.Qg6#
- 1...h3!
- 1...Rxe6+
- 1.f8R?
- 1...Rxe6+
- 2.Qxe6#
- 1...Rxc6
- 2.Qxc6#
- 1...Rd3
- 2.Bb3#
- 2.Bh3#
- 2.Bg4#
- 2.Bd5#
- 2.Bf5#
- 2.Bd7#
- 2.Bf7#
- 2.Bc8#
- 2.Bg8#
- 1...Rd1
- 2.Bh3#
- 2.Bg4#
- 2.Bd5#
- 2.Bf5#
- 2.Bd7#
- 2.Bf7#
- 2.Bc8#
- 2.Bg8#
- 1...Rd2
- 2.Bh3#
- 2.Bg4#
- 2.Bd5#
- 2.Bf5#
- 2.Bd7#
- 2.Bf7#
- 2.Bc8#
- 2.Bg8#
- 1...Rd4
- 2.Sg5#
- 2.Bd5#
- 2.Bf5#
- 1...Rd5
- 2.Bxd5#
- 2.Bf5#
- 1...Rd7
- 2.Bd5#
- 2.Bf5#
- 2.Bxd7#
- 1...Rd8
- 2.Bd5#
- 2.Bf5#
- 1...h5
- 2.Qg6#
- 1...h6
- 2.Qg6#
- 1...h3!
- 1...Rxe6+
- 1.Kg5?
- Keys
- 1.Sa6!
- threat
- 2.Sc5#
- 1...Rxe6+
- 2.Qxe6#
- 1...Rxc6
- 2.Qxc6#
- 1...Rd3
- 2.Bb3#
- 1...Rd4
- 2.Sg5#
- 1...Rd5
- 2.Bf5#
- threat
- 1.Sa6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- R(f);OGATE,XP(G)::QAB(L),XR(f)
- R(f);CHECK,OGATE,P_SPINR(f),XB(H)::QAR2(L),XR(f)
- Tries
- Try
- K(I);N_SPINB(H),S_FLIGHT
- Threat
- DUALS(2)
- Vars
- R(f);OGATE,P_SPINR(f),XB(H)::QAR2(L),XR(f)
- Refutation
- P(g);CHECK
- Try
- R(E);CHECK,XB(a)
- Refutation
- P(e);XR(E)
- Try
- P(K);
- Vars
- R(f);CHECK,OGATE,P_SPINR(f),XB(H)::QAR2(L),XR(f)
- R(f);OGATE,XP(G)::QAB(L),XR(f)
- P(g);N_GUARD::QAB(L)
- Refutation
- P(d);
- Try
- P(K);
- Vars
- R(f);CHECK,OGATE,P_SPINR(f),XB(H)::QAR2(L),XR(f)
- R(f);OGATE,XP(G)::QAB(L),XR(f)
- P(g);N_GUARD::QAB(L)
- Refutation
- P(d);
- Try
- P(K);
- Vars
- R(f);CHECK,OGATE,P_SPINR(f),XB(H)::QAR2(L),XR(f)
- R(f);OGATE,XP(G)::QAB(L),XR(f)
- P(g);N_GUARD::QAB(L)
- Refutation
- P(d);
- Try
- P(K);
- Vars
- R(f);CHECK,OGATE,P_SPINR(f),XB(H)::QAR2(L),XR(f)
- R(f);OGATE,XP(G)::QAB(L),XR(f)
- P(g);N_GUARD::QAB(L)
- Refutation
- P(d);
- Try
- Actual
- S(J);
- Threat
- S(J)
- Vars
- R(f);CHECK,OGATE,P_SPINR(f),XB(H)::QAR2(L),XR(f)
- R(f);OGATE,XP(G)::QAB(L),XR(f)
- R(f);N_PINB(H),SBLOCK::QAR(L)+B(H)
- R(f);N_PINB(H),N_SPINB(a),SBLOCK::S(D)
- R(f);N_PINB(H),SBLOCK::QAR(L)+B(H),DCHECK
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).