MESON Chess Problem Database

Problem Display
PID: 20946 (r1b5/B2p3p/1Np2R2/2k3NR/P4PB1/Ppp3pK/1r4P1/Q7 w - - 0 1)

Marin y Llovet, Valentin

1st Prize, Good Companions (October), 1914

r1b5/B2p3p/1Np2R2/2k3NR/P4PB1/Ppp3pK/1r4P1/Q7

#2

12 + 10

3132 The Good Companion Two-Mover 1922
3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Qxc3#
    • 1...Ra2
      • 2.Qxc3#
    • 1...Rd2
      • 2.Qxc3#
    • 1...Re2
      • 2.Qxc3#
    • 1...Rf2
      • 2.Qxc3#
    • 1...Rxg2
      • 2.Qxc3#
    • 1...c2
      • 2.Qg1#
    • 1...d6
      • 2.Se6#
  • Tries
    • 1.Qc1?
      • threat
        • 2.Qe3#
        • 2.Qxc3#
      • 1...Rxa7
        • 2.Qe3#
      • 1...d5
        • 2.Qxc3#
      • 1...Rc2
        • 2.Qe3#
      • 1...Rd2
        • 2.Qxc3#
      • 1...Re2
        • 2.Qxc3#
      • 1...Ba6
        • 2.Qe3#
      • 1...c2
        • 2.Qe3#
        • 2.Qg1#
      • 1...Kd4!
  • Keys
    • 1.Be2!
      • threat
        • 2.Qg1#
      • 1...d5+
        • 2.Sd7#
      • 1...d6+
        • 2.Se6#
      • 1...Kd4
        • 2.Qg1#
      • 1...Rxe2
        • 2.Qxc3#
      • 1...Rb1
        • 2.Qxc3#
      • 1...Rd2
        • 2.Qxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(a);OGATE::QAR2(A),XP(c)
    • R(a);OGATE,XP(B)::QAR2(A),XP(c)
    • P(c);S_CUTR(a)::QAB(A)
    • P(g);P_PINB(G),SBLOCK::R(I)+S(H),DCHECK
  • Tries
    • Try
      • Q(A);P_PINP(c)
      • Threat
        • DUALS(2)
      • Vars
        • R(i);XB(L)::QAB(A)
        • P(g);P_PINB(G)::QAR2(A),XP(c)
        • R(a);N_SPINP(c)::QAB(A)
        • R(a);::QAR2(A),XP(c)
        • B(j);::QAB(A)
      • Refutation
        • K(e);N_SPINP(c),S_FLIGHT
  • Actual
    • B(G);
    • Threat
      • QAB(A)
    • Vars
      • P(g);CHECK,SBLOCK::B(L)+S(J),DCHECK
      • P(g);CHECK,SBLOCK::R(I)+S(H),DCHECK
      • K(e);S_FLIGHT::QAB(A)
      • R(a);OGATE,XB(G)::QAR2(A),XP(c)
      • R(a);OGATE::QAR2(A),XP(c)
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