MESON Chess Problem Database
Problem Display
PID: 244790 (2Q5/R3p3/n2kp3/2r4p/q1bP1N1K/8/7B/1n1R4 w - - 0 1)
Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)
Mat, 1977
#2
7 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qxd1
- 2.Rd7#
- 2.Qd7#
- 1...Qc2
- 2.Rd7#
- 2.Qd7#
- 1...Qb3
- 2.Rd7#
- 2.Qd7#
- 1...Qd7
- 2.Rxd7#
- 2.Qxd7#
- 1...Qa1
- 2.Rd7#
- 2.Qd7#
- 1...Qa2
- 2.Rd7#
- 2.Qd7#
- 1...Qa3
- 2.Rd7#
- 2.Qd7#
- 1...Qb4
- 2.Rd7#
- 2.Qd7#
- 1...Qa5
- 2.Rd7#
- 2.Qd7#
- 1...Rb5
- 2.Rd7#
- 2.Qd7#
- 1...Rd5
- 2.Qxe6#
- 1...Rc6
- 2.Rd7#
- 2.Qd7#
- 2.Qd8#
- 1...Bf1
- 2.Qxe6#
- 1...Be2
- 2.Qxe6#
- 1...Bd3
- 2.Qxe6#
- 1...Bb5
- 2.Qxe6#
- 1...Bd5
- 2.Sxe6#
- 1...Sb4
- 2.Qxc5#
- 1...Sb8
- 2.Qxc5#
- 1...e5
- 2.dxc5#
- 1...Qxd1
- Tries
- 1.Se2+?
- 1...Re5
- 2.dxe5#
- 1...e5
- 2.dxc5#
- 2.dxe5#
- 1...Kd5!
- 1...Re5
- 1.Sg2+?
- 1...Re5
- 2.dxe5#
- 1...e5
- 2.dxc5#
- 2.dxe5#
- 1...Kd5!
- 1...Re5
- 1.Sh3+?
- 1...Re5
- 2.dxe5#
- 1...e5
- 2.dxc5#
- 2.dxe5#
- 1...Kd5!
- 1...Re5
- 1.Sd5+?
- 1...e5
- 2.dxe5#
- 1...Kxd5!
- 1...e5
- 1.Sxh5+?
- 1...Re5
- 2.dxe5#
- 1...e5
- 2.dxc5#
- 2.dxe5#
- 1...Kd5!
- 1...Re5
- 1.Sxe6+?
- 1...Re5
- 2.dxe5#
- 1...Kd5!
- 1...Re5
- 1.Sg6+?
- 1...Re5
- 2.dxe5#
- 1...e5
- 2.dxc5#
- 2.dxe5#
- 1...Kd5!
- 1...Re5
- 1.Qd8+?
- 1...Qd7
- 2.Qxd7#
- 1...Kc6!
- 1...Qd7
- 1.Se2+?
- Keys
- 1.d5!
- threat
- 2.Sxe6#
- 2.Qxe6#
- 1...Ke5
- 2.Qxe6#
- 1...Qxd1
- 2.Qxe6#
- 1...Rxd5
- 2.Sxe6#
- 1...Rxc8
- 2.Sxe6#
- 1...Bxd5
- 2.Qxe6#
- 1...exd5
- 2.Se6#
- 2.Qe6#
- 1...Rc6
- 2.Sxe6#
- 1...Rc7
- 2.Sxe6#
- 1...Qc2
- 2.Qxe6#
- 1...Qb3
- 2.Qxe6#
- 1...Qd7
- 2.Sxe6#
- 1...Qa1
- 2.Qxe6#
- 1...Qa2
- 2.Qxe6#
- 1...Qa3
- 2.Qxe6#
- 1...Ra5
- 2.Sxe6#
- 1...Rb5
- 2.Sxe6#
- 1...Bf1
- 2.Qxe6#
- 1...Ba2
- 2.Qxe6#
- 1...Be2
- 2.Qxe6#
- 1...Bb3
- 2.Qxe6#
- 1...Bd3
- 2.Qxe6#
- 1...Bb5
- 2.Qxe6#
- 1...Sd2
- 2.Qxe6#
- 1...Sc7
- 2.Sxe6#
- 1...e5
- 2.Qe6#
- threat
- 1.d5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 17
- REMOVED MATES = 2
- Sets
- R(d);S_CUTB(c)::QAR1(G),XP(h)
- B(c);N_GUARD::QAR1(G),XP(h)
- B(c);SBLOCK,S_CUTR(d)::B(B)+S(D),XP(h)
- S(f);N_GUARD::QAB1(G),XR(d)
- P(h);SBLOCK::R(A)+P(C)DCHECK,XR(d)
- Tries
- Try
- S(D);CHECK
- Vars
- R(d);OGATE,P_SPINR(d)::R(A)+P(C)DCHECK,XR(d)
- Refutation
- K(g);P-FLIGHT
- Try
- S(D);CHECK
- Vars
- R(d);OGATE,P_SPINR(d)::R(A)+P(C)DCHECK,XR(d)
- Refutation
- K(g);P-FLIGHT
- Try
- S(D);CHECK
- Vars
- R(d);OGATE,P_SPINR(d)::R(A)+P(C)DCHECK,XR(d)
- Refutation
- K(g);P-FLIGHT
- Try
- S(D);CHECK
- Vars
- P(h);OGATE,P_SPINP(h)::P(C),XP(h)
- Refutation
- K(g);P-FLIGHT,XS(D)
- Try
- S(D);CHECK,XP(e)
- Vars
- R(d);OGATE,P_SPINR(d)::R(A)+P(C)DCHECK,XR(d)
- Refutation
- K(g);P-FLIGHT
- Try
- S(D);CHECK,XP(h)
- Vars
- R(d);OGATE,P_SPINR(d)::R(A)+P(C)DCHECK,XR(d)
- Refutation
- K(g);P-FLIGHT
- Try
- S(D);CHECK
- Vars
- R(d);OGATE,P_SPINR(d)::R(A)+P(C)DCHECK,XR(d)
- Refutation
- K(g);P-FLIGHT
- Try
- Q(G);CHECK
- Vars
- Q(b);N_GUARD,P_SPINQ(b)::QAR1(G),XQ(b)
- Refutation
- K(g);P-FLIGHT
- Try
- Actual
- P(C);
- Threat
- DUALS(2)
- Vars
- K(g);S_FLIGHT::QAR1(G),XP(h)
- Q(b);XR(A)::QAR1(G),XP(h)
- R(d);P_SPINR(d),XP(C)::B(B)+S(D),XP(h)
- R(d);XQ(G)::B(B)+S(D),XP(h)
- B(c);P_PINS(D),P_SPINB(c),XP(C)::QAR1(G),XP(h)
- R(d);::B(B)+S(D),XP(h)
- Q(b);::QAR1(G),XP(h)
- Q(b);::B(B)+S(D),XP(h)
- B(c);P_PINS(D)::QAR1(G),XP(h)
- S(a);::QAR1(G),XP(h)
- S(f);::B(B)+S(D),XP(h)
- P(h);::QAR1(G)
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).