MESON Chess Problem Database
Problem Display
PID: 266626 (b7/4PK2/4R3/3k1p2/5R2/BPr1n3/5N2/1Q6 w - - 0 1)
Styger, Christian
Schweizerische Schachzeitung, 2021
#2
8 + 5
SOLUTION
- SOUND
- Sets
- 1...Rc1
- 2.Qd3#
- 1...Rd3
- 2.Qxd3#
- 1...Rc5
- 2.Qd3#
- 1...Rc6
- 2.Qd3#
- 1...Rc7
- 2.Qd3#
- 1...Rc8
- 2.Qd3#
- 1...Sd1
- 2.Qxf5#
- 1...Sf1
- 2.Qxf5#
- 1...Sg2
- 2.Qxf5#
- 1...Rc1
- Tries
- 1.Sd1?
- threat
- 2.Sxc3#
- 1...Sxd1
- 2.Qxf5#
- 1...Rc1
- 2.Sxe3#
- 2.Qd3#
- 1...Rc2
- 2.Sxe3#
- 1...Rd3
- 2.Qxd3#
- 1...Rc4
- 2.Sxe3#
- 1...Rc5
- 2.Sxe3#
- 2.Qd3#
- 1...Rc6
- 2.Sxe3#
- 2.Qd3#
- 1...Rc7
- 2.Sxe3#
- 2.Qd3#
- 1...Rc8
- 2.Sxe3#
- 2.Qd3#
- 1...Rxb3!
- threat
- 1.Se4?
- threat
- 2.Sxc3#
- 2.Sf6#
- 1...Rxb3
- 2.Sf6#
- 1...fxe4
- 2.Qxe4#
- 1...Rc2
- 2.Sf6#
- 1...Rc1
- 2.Sf6#
- 2.Qd3#
- 1...Rd3
- 2.Sf6#
- 2.Qxd3#
- 1...Rc4
- 2.Sf6#
- 1...Rc5
- 2.Sf6#
- 2.Qd3#
- 1...Rc6
- 2.Sf6#
- 2.Qd3#
- 1...Rc7
- 2.Sf6#
- 2.Qd3#
- 1...Rc8
- 2.Sf6#
- 2.Qd3#
- 1...Sd1
- 2.Sf6#
- 1...Sg4
- 2.Sxc3#
- 1...Kd4!
- threat
- 1.Sg4?
- threat
- 2.Sf6#
- 2.Rd6#
- 1...fxg4
- 2.Qe4#
- 1...Rc5
- 2.Sxe3#
- 2.Sf6#
- 2.Qd3#
- 1...Rc6
- 2.Sxe3#
- 2.Sf6#
- 2.Re5#
- 2.Qd3#
- 1...Sc4
- 2.Sf6#
- 1...Sxg4!
- threat
- 1.Rfe4?
- threat
- 2.Rd6#
- 1...fxe4
- 2.Qxe4#
- 1...Rc5
- 2.Qd3#
- 1...Rc6
- 2.R6e5#
- 2.Qd3#
- 1...Sc4!
- threat
- 1.Rxf5+?
- 1...Sxf5
- 2.Qe4#
- 1...Kd4!
- 1...Sxf5
- 1.Qd1+?
- 1...Rd3
- 2.Qf3#
- 2.Qxd3#
- 1...Sxd1!
- 1...Rd3
- 1.e8Q?
- threat
- 2.Re5#
- 2.Rd6#
- 2.Qd7#
- 2.Qd8#
- 1...Rc5
- 2.Qd3#
- 2.Qd7#
- 2.Qd8#
- 1...Rc6
- 2.Re5#
- 2.Qd3#
- 1...Rc8
- 2.Re5#
- 2.Rd6#
- 2.Qd3#
- 2.Qd7#
- 1...Bc6
- 2.Re5#
- 2.Rd6#
- 1...Sc4
- 2.Qb5#
- 2.Qxa8#
- 1...Sg4
- 2.Rd6#
- 2.Qd7#
- 2.Qd8#
- 1...Rc7+!
- threat
- 1.e8S?
- threat
- 2.Sf6#
- 1...Rc7+
- 2.Sxc7#
- 1...Sg4!
- threat
- 1.Sd1?
- Keys
- 1.Sd3!
- threat
- 2.Rd6#
- 1...Rxd3
- 2.Qxd3#
- 1...Rc5
- 2.Sb4#
- 1...Rc6
- 2.Re5#
- 1...Sc4
- 2.Qh1#
- threat
- 1.Sd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- R(a);N_GUARD::QAR2(A)
- R(a);N_GUARD::QAR2(A),XR(a)
- R(a);N_GUARD,P_PINP(G)::QAR2(A)
- S(b);N_GUARD::QAR2(A),XP(d)
- Tries
- Try
- S(B);
- Threat
- S(B),XR(a)
- Vars
- S(b);N_GUARD,XS(B)::QAR2(A),XP(d)
- R(a);N_GUARD::S(B),XS(b)
- R(a);N_GUARD::QAR2(A),XR(a)
- Refutation
- R(a);XP(D)
- Try
- S(B);
- Threat
- DUALS(2)
- Vars
- R(a);XP(D)::S(B)
- P(d);OGATE,XS(B)::QAB1(A),XP(d)
- R(a);::S(B)
- S(b);::S(B)
- S(b);::S(B),XR(a)
- Refutation
- K(c);P-FLIGHT
- Try
- S(B);
- Threat
- DUALS(2)
- Vars
- P(d);N_GUARD,XS(B)::QAB1(A)
- S(b);::S(B)
- Refutation
- S(b);XS(B)
- Try
- R(E);
- Threat
- R1(F)
- Vars
- P(d);OGATE,XR(E)::QAB1(A),XP(d)
- R(a);N_GUARD::QAR2(A)
- Refutation
- S(b);
- Try
- R(E);CHECK,XP(d)
- Vars
- S(b);XR(E)::QAB1(A)
- Refutation
- K(c);P-FLIGHT
- Try
- Q(A);CHECK
- Refutation
- S(b);XQ(A)
- Try
- P(G);
- Threat
- DUALS(4)
- Refutation
- R(a);CHECK
- Try
- P(G);
- Threat
- S(G)
- Vars
- R(a);CHECK,N_GUARD::S(G),XR(a)
- Refutation
- S(b);
- Try
- Actual
- S(B);
- Threat
- R1(F)
- Vars
- R(a);OGATE,XS(B)::QAR2(A),XR(a)
- R(a);SBLOCK::S(B)
- R(a);SBLOCK::R1(F)
- S(b);N_GUARD::QAB(A)
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