MESON Chess Problem Database

Problem Display
PID: 64855 (2B1R1N1/5p2/4bP2/4Pkp1/2p1pnp1/2N1P1B1/K6R/5Q2 w - - 0 1)

Kovacs, Norbert

Good Companions (December), 1921

2B1R1N1/5p2/4bP2/4Pkp1/2p1pnp1/2N1P1B1/K6R/5Q2

#2

11 + 8

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Sets
    • 1...Kg6
      • 2.Se7#
  • Tries
    • 1.Rxe6?
      • threat
        • 2.Se7#
      • 1...Kg6
        • 2.Se7#
      • 1...fxe6!
    • 1.Qg2?
      • threat
        • 2.Qxe4#
      • 1...Kg6
        • 2.Se7#
      • 1...Sxg2
        • 2.Se7#
      • 1...Kxe5!
    • 1.Qb1?
      • threat
        • 2.Qxe4#
      • 1...Kg6
        • 2.Se7#
      • 1...Sd3
        • 2.Se7#
      • 1...Kxe5!
    • 1.Qh1?
      • threat
        • 2.Qxe4#
      • 1...Kg6
        • 2.Se7#
      • 1...Sg2
        • 2.Se7#
      • 1...Kxe5!
    • 1.Qxf4+?
      • 1...Kg6
        • 2.Se7#
        • 2.Rh6#
      • 1...gxf4!
  • Keys
    • 1.Qxc4!
      • 1...Kxe5
        • 2.Qd5#
      • 1...Kg6
        • 2.Se7#
      • 1...Bxc8
        • 2.Qxe4#
      • 1...Bd7
        • 2.Qxe4#
      • 1...Se2
        • 2.Se7#
      • 1...Sg2
        • 2.Se7#
      • 1...Sd3
        • 2.Se7#
      • 1...Sh3
        • 2.Se7#
      • 1...Sd5
        • 2.Qxe4#
      • 1...Sh5
        • 2.Se7#
      • 1...Sg6
        • 2.Sh6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • K(e);N_SPINB(g),N_SPINS(c),S_FLIGHT::S(K)
  • Tries
    • Try
      • R(J);XB(g)
      • Threat
        • S(K)
      • Vars
        • K(e);N_SPINS(c),S_FLIGHT::S(K)
      • Refutation
        • P(h);P_SPINP(h),XR(J)
    • Try
      • Q(A);N_PINS(c)
      • Threat
        • QAB1(A),XP(b)
      • Vars
        • K(e);N_SPINB(g),S_FLIGHT::S(K)
        • S(c);XQ(A)::S(K)
      • Refutation
        • K(e);P-FLIGHT,P_SPINS(c),XP(G)
    • Try
      • Q(A);N_PINS(c),P_PINP(b)
      • Threat
        • QAB1(A),XP(b)
      • Vars
        • K(e);N_SPINB(g),S_FLIGHT::S(K)
        • S(c);N_SPINP(b)::S(K)
      • Refutation
        • K(e);N_SPINP(b),P-FLIGHT,P_SPINS(c),XP(G)
    • Try
      • Q(A);N_PINS(c)
      • Threat
        • QAB1(A),XP(b)
      • Vars
        • K(e);N_SPINB(g),S_FLIGHT::S(K)
        • S(c);::S(K)
      • Refutation
        • K(e);P-FLIGHT,P_SPINS(c),XP(G)
    • Try
      • Q(A);CHECK,XS(c)
      • Refutation
        • P(f);XQ(A)
  • Actual
    • Q(A);N_PINS(c),P_SPINQ(A),XP(a)
    • Vars
      • K(e);P-FLIGHT,P_SPINS(c),XP(G)::QAR1(A)
      • K(e);N_SPINB(g),S_FLIGHT::S(K)
      • B(g);N_PINQ(A),N_SPINB(g),XB(I)::QAB1(A),XP(b)
      • B(g);N_PINQ(A)::QAB1(A),XP(b)
      • S(c);::S(K)
      • S(c);N_PINQ(A)::QAB1(A),XP(b)
      • S(c);SBLOCK::S(K)
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