Meson Chess Problem Database

Gavrilov, Constantin Grigorievich

Shakhmaty i Shashki, 1940

8 + 8

15148	Sadier Collection	2021

Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 5
Sets
- R(b);S_CUTB(a)::R1(G)
- R(g);S_CUTB(a)::R1(G)
- R(g);SBLOCK::B(E)+S(C),DCHECK
- R(g);N_GUARD,P_SPINR(g),XS(C)::QAB(B)
- R(g);N_GUARD::QAB(B),XR(g)
- B(a);N_GUARD::R1(G)
- B(a);N_GUARD,N_SPINP(d)::R1(G),XB(a)
- P(f);OGATEB,SBLOCK::R(A)
Tries
- Try
  - S(C);CHECK
  - Refutation
    - P(h);
- Try
  - S(C);CHECK,N_PINP(d)
  - Refutation
    - P(h);P_SPINP(h)
- Try
  - S(C);CHECK
  - Refutation
    - P(h);
- Try
  - S(C);CHECK
  - Vars
    - K(e);P-FLIGHT,P_SPINR(g)::R1(A),XB(c)
  - Refutation
    - K(e);N_SPINP(d),S_FLIGHT
- Try
  - S(C);CHECK
  - Refutation
    - P(h);
- Try
  - S(C);CHECK
  - Refutation
    - P(h);
- Try
  - R(G);XB(c)
  - Threat
    - DUALS(2)
  - Vars
    - R(g);N_GUARD,P_SPINR(g),XS(C)::QAB(B)
    - R(b);::B(E)+S(C),DCHECK
    - B(a);N_GUARD,N_SPINP(d)::R1(G),XB(a)
  - Refutation
    - P(f);
- Try
  - Q(B);CHECK,N_PINP(d)
  - Refutation
    - R(g);XQ(B)
- Try
  - Q(B);N_PINP(d),XB(a)
  - Threat
    - DUALS(2)
  - Vars
    - R(b);::R1(G)
    - R(g);::R1(G)
    - R(g);SBLOCK::B(E)+S(C),DCHECK
  - Refutation
    - R(g);
Actual
- Q(B);N_PINP(d)
- Threat
  - QAB1(B),XB(c)
- Vars
  - P(f);OGATEB,SBLOCK::R(A)
  - R(b);OGATE::QAB1(B)
  - R(b);SBLOCK::B(E)+S(C),DCHECK
  - R(g);S_CUTB(a)::R1(G)
  - R(g);SBLOCK::B(E)+S(C),DCHECK
  - B(c);::B(E)+S(C),DCHECK

MESON Chess Problem Database