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Problem Display

PID: 287427 (8/8/7Q/2R1R3/1p1kpN2/1P4p1/6K1/8 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Problem Paradise, 2019

6 + 4

15601	Albrecht-Leiss-Degener Collection	2026

SOLUTION

SOUND
Sets
- 1...e3
  - 2.Qd6#
Tries
- 1.Kxg3?
  - 1...e3
    - 2.Qd6#
  - 1...Ke3!
- 1.Sd3?
  - threat
    - 2.Red5#
  - 1...exd3
    - 2.Qe3#
    - 2.Qf4#
    - 2.Qh4#
    - 2.Qd6#
  - 1...e3
    - 2.Qxe3#
    - 2.Qd6#
  - 1...Kxd3!
- 1.Sh3?
  - threat
    - 2.Red5#
    - 2.Qd2#
  - 1...e3
    - 2.Qxe3#
    - 2.Qd6#
  - 1...Kd3!
- 1.Sh5?
  - threat
    - 2.Red5#
    - 2.Qd2#
  - 1...e3
    - 2.Qxe3#
    - 2.Qd6#
  - 1...Kd3!
- 1.Sg6?
  - threat
    - 2.Red5#
    - 2.Qd2#
  - 1...e3
    - 2.Qxe3#
  - 1...Kd3!
- 1.Rcd5+?
  - 1...Ke3
    - 2.Rd3#
  - 1...Kc3!
- 1.Rc6?
  - 1...Kxe5
    - 2.Qf6#
  - 1...e3
    - 2.Qd6#
  - 1...Ke3!
- 1.Rf5?
  - 1...e3
    - 2.Rc4#
  - 1...Ke3!
- 1.Rg5?
  - 1...e3
    - 2.Rc4#
  - 1...Ke3!
- 1.Rh5?
  - 1...e3
    - 2.Rc4#
  - 1...Ke3!
- 1.Qg5?
  - 1...e3
    - 2.Rc4#
    - 2.Qd8#
  - 1...Ke3!
- 1.Qg7?
  - 1...e3
    - 2.Rc4#
    - 2.Qd7#
  - 1...Ke3!
- 1.Qf8?
  - 1...e3
    - 2.Qd6#
    - 2.Qd8#
  - 1...Ke3!
- 1.Qh1?
  - 1...e3
    - 2.Qa1#
    - 2.Qd1#
  - 1...Ke3!
- 1.Qh3?
  - 1...e3
    - 2.Qd7#
  - 1...Ke3!
- 1.Qh4?
  - 1...e3
    - 2.Qd8#
  - 1...Ke3!
- 1.Qh5?
  - 1...e3
    - 2.Rc4#
    - 2.Qd1#
  - 1...Ke3!
- 1.Qa6?
  - 1...e3
    - 2.Se2#
    - 2.Se6#
    - 2.Qd3#
    - 2.Qc4#
    - 2.Qa1#
    - 2.Qd6#
  - 1...Ke3!
- 1.Qb6?
  - 1...e3
    - 2.Qd8#
    - 2.Qxb4#
    - 2.Qd6#
  - 1...Ke3!
- 1.Qc6?
  - threat
    - 2.Rxe4#
    - 2.Qxe4#
  - 1...e3
    - 2.Rcd5#
    - 2.Re4#
    - 2.Qe4#
    - 2.Qd5#
    - 2.Qd7#
    - 2.Qd6#
  - 1...Ke3!
- 1.Qe6?
  - 1...e3
    - 2.Rc4#
    - 2.Red5#
    - 2.Qc4#
    - 2.Qd5#
    - 2.Qd7#
    - 2.Qd6#
  - 1...Ke3!
- 1.Qf6?
  - 1...e3
    - 2.Rc4#
    - 2.Qd8#
    - 2.Qd6#
  - 1...Ke3!
- 1.Qg6?
  - threat
    - 2.Qxe4#
  - 1...e3
    - 2.Se2#
    - 2.Se6#
    - 2.Red5#
    - 2.Qd3#
    - 2.Qe4#
    - 2.Qd6#
  - 1...Ke3!
- 1.Qh7?
  - threat
    - 2.Qxe4#
  - 1...e3
    - 2.Se2#
    - 2.Se6#
    - 2.Red5#
    - 2.Qd3#
    - 2.Qe4#
    - 2.Qd7#
  - 1...Ke3!
- 1.Qh8?
  - 1...e3
    - 2.Rc4#
    - 2.Qd8#
  - 1...Ke3!
Keys
- 1.Sd5!
  - 1...Kd3
    - 2.Qe3#
  - 1...Kxc5
    - 2.Qb6#
  - 1...Kxe5
    - 2.Qf6#
  - 1...e3
    - 2.Qxe3#

FEATURES

Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 0
Sets
- P(d);::QAR2(F)
Tries
- Try
  - K(A);P-FLIGHT,XP(a)
  - Vars
    - P(d);::QAR2(F)
  - Refutation
    - K(c);P_SPINP(d),S_FLIGHT
- Try
  - S(C);
  - Threat
    - R1(E)
  - Refutation
    - K(c);P-FLIGHT,XS(C)
- Try
  - S(C);
  - Threat
    - DUALS(2)
  - Refutation
    - K(c);P-FLIGHT
- Try
  - S(C);
  - Threat
    - DUALS(2)
  - Refutation
    - K(c);P-FLIGHT
- Try
  - S(C);
  - Threat
    - DUALS(2)
  - Vars
    - P(d);::QAB1(F),XP(d)
  - Refutation
    - K(c);P-FLIGHT
- Try
  - R(D);CHECK
  - Vars
    - K(c);OGATE,P_SPINP(d),S_FLIGHT::R1(D)
  - Refutation
    - K(c);S_FLIGHT
- Try
  - R(D);
  - Vars
    - K(c);OGATEB,S_FLIGHT,XR(E)::QAB1(F)
    - P(d);::QAR2(F)
  - Refutation
    - K(c);P_SPINP(d),S_FLIGHT
- Try
  - R(E);
  - Vars
    - P(d);SBLOCK::R1(D)
  - Refutation
    - K(c);S_FLIGHT
- Try
  - R(E);
  - Vars
    - P(d);SBLOCK::R1(D)
  - Refutation
    - K(c);S_FLIGHT
- Try
  - R(E);
  - Vars
    - P(d);SBLOCK::R1(D)
  - Refutation
    - K(c);S_FLIGHT
- Try
  - Q(F);
  - Refutation
    - K(c);P_SPINP(d),S_FLIGHT
- Try
  - Q(F);
  - Refutation
    - K(c);P_SPINP(d),S_FLIGHT
- Try
  - Q(F);
  - Refutation
    - K(c);P_SPINP(d),S_FLIGHT
- Try
  - Q(F);
  - Refutation
    - K(c);P_SPINP(d),S_FLIGHT
- Try
  - Q(F);
  - Vars
    - P(d);::QAR(F)
  - Refutation
    - K(c);P_SPINP(a),S_FLIGHT
- Try
  - Q(F);
  - Vars
    - P(d);::QAR(F)
  - Refutation
    - K(c);P_SPINP(d),S_FLIGHT
- Try
  - Q(F);
  - Refutation
    - K(c);P_SPINP(d),S_FLIGHT
- Try
  - Q(F);
  - Refutation
    - K(c);P_SPINP(d),S_FLIGHT
- Try
  - Q(F);
  - Refutation
    - K(c);P_SPINP(d),S_FLIGHT
- Try
  - Q(F);
  - Threat
    - DUALS(2)
  - Refutation
    - K(c);P_SPINP(d),S_FLIGHT
- Try
  - Q(F);
  - Refutation
    - K(c);P_SPINP(d),S_FLIGHT
- Try
  - Q(F);
  - Refutation
    - K(c);P_SPINP(d),S_FLIGHT
- Try
  - Q(F);
  - Threat
    - QAR1(F),XP(d)
  - Refutation
    - K(c);P_SPINP(d),S_FLIGHT
- Try
  - Q(F);
  - Threat
    - QAR1(F),XP(d)
  - Refutation
    - K(c);P_SPINP(d),S_FLIGHT
- Try
  - Q(F);
  - Refutation
    - K(c);P_SPINP(d),S_FLIGHT
Actual
- S(C);
- Vars
  - K(c);N_GUARD,P-FLIGHT::QAR1(F)
  - K(c);OGATEB,S_FLIGHT,XR(D)::QAB1(F)
  - K(c);OGATEB,S_FLIGHT,XR(E)::QAB1(F)
  - P(d);::QAB1(F),XP(d)

MESON Chess Problem Database

Problem Display

PID: 287427 (8/8/7Q/2R1R3/1p1kpN2/1P4p1/6K1/8 w - - 0 1)

SOLUTION

FEATURES