MESON Chess Problem Database

Problem Display
PID: 64645 (1B1R2Q1/1P6/1K2Nr1p/5P2/1pNpk1P1/1BbrP3/4P3/7n w - - 0 1)

Erokhin, Vladimir Alekseevich

2nd Comm., Probleemblad, 1980

1B1R2Q1/1P6/1K2Nr1p/5P2/1pNpk1P1/1BbrP3/4P3/7n

#2

12 + 8

3752 FIDE Album (1980-1982) 1988

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe6+
      • 2.Qxe6#
    • 1...Rf7
      • 2.Sc5#
    • 1...Rf8
      • 2.Sc5#
  • Tries
    • 1.Ka5?
      • threat
        • 2.Sc5#
      • 1...Rxe6
        • 2.Qxe6#
      • 1...Rxf5+!
    • 1.Kb5?
      • threat
        • 2.Sc5#
      • 1...Rxe6
        • 2.Qxe6#
      • 1...Rxf5+!
    • 1.Ka7?
      • threat
        • 2.Sc5#
      • 1...Rxe6
        • 2.Qxe6#
      • 1...Rxf5!
    • 1.Bc2?
      • threat
        • 2.Bxd3#
      • 1...Rxe6+
        • 2.Qxe6#
      • 1...Sf2!
    • 1.Bf4?
      • threat
        • 2.Sd6#
      • 1...Rxe6+
        • 2.Qxe6#
      • 1...dxe3!
    • 1.Qe8?
      • threat
        • 2.Qc6#
      • 1...Rxe6+
        • 2.Qxe6#
      • 1...Rxf5
        • 2.Sc5#
        • 2.Sg5#
      • 1...dxe3!
  • Keys
    • 1.Rd5!
      • threat
        • 2.Re5#
      • 1...Rxe6+
        • 2.Qxe6#
      • 1...Kxd5
        • 2.Sd2#
      • 1...Rxf5
        • 2.Sc5#
      • 1...dxe3
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(g);CHECK,OGATE,XS(H)::QAR2(L),XR(g)
    • R(g);N_PINS(H)::S(H)
  • Tries
    • Try
      • K(G);N_SPINS(H),S_FLIGHT
      • Threat
        • S(H)
      • Vars
        • R(g);OGATE,XS(H)::QAR2(L),XR(g)
      • Refutation
        • R(g);CHECK,XP(F)
    • Try
      • K(G);N_SPINS(H),P-FLIGHT
      • Threat
        • S(H)
      • Vars
        • R(g);OGATE,XS(H)::QAR2(L),XR(g)
      • Refutation
        • R(g);CHECK,XP(F)
    • Try
      • K(G);N_SPINS(H),S_FLIGHT
      • Threat
        • S(H)
      • Vars
        • R(g);OGATE,XS(H)::QAR2(L),XR(g)
      • Refutation
        • R(g);XP(F)
    • Try
      • B(B);P_PINR(c)
      • Threat
        • B(B),XR(c)
      • Vars
        • R(g);CHECK,OGATE,XS(H)::QAR2(L),XR(g)
      • Refutation
        • S(a);
    • Try
      • B(J);
      • Threat
        • S(D)
      • Vars
        • R(g);CHECK,OGATE,XS(H)::QAR2(L),XR(g)
      • Refutation
        • P(e);XP(C)
    • Try
      • Q(L);
      • Threat
        • QAB(L)
      • Vars
        • R(g);CHECK,OGATE,P_SPINR(g),XS(H)::QAR2(L),XR(g)
      • Refutation
        • P(e);XP(C)
  • Actual
    • R(K);
    • Threat
      • R1(K)
    • Vars
      • R(g);CHECK,OGATE,XS(H)::QAR2(L),XR(g)
      • K(f);S_FLIGHT,XR(K)::B(B)+S(D)
      • R(g);N_PINS(H),XP(F)::S(H)
      • P(e);SBLOCK,XP(C)::S(D)
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