MESON Chess Problem Database

Problem Display
PID: 279146 (1q1b2Q1/2n1nrpN/1pp1p3/1r6/2RPk1P1/1P1R1pP1/2K2P2/7B w - - 0 1)

Laitinen, Gottfried

Schackvarlden, 1942

1q1b2Q1/2n1nrpN/1pp1p3/1r6/2RPk1P1/1P1R1pP1/2K2P2/7B

#2

11 + 12

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Re3#
    • 1...Re5
      • 2.d5#
    • 1...Scd5
      • 2.Sg5#
    • 1...Sf5
      • 2.Bxf3#
    • 1...e5
      • 2.d5#
  • Tries
    • 1.Sf6+?
      • 1...gxf6
        • 2.Bxf3#
      • 1...Rxf6!
    • 1.Qxd8?
      • threat
        • 2.Re3#
      • 1...Rxb3
        • 2.Sg5#
      • 1...Scd5
        • 2.Sg5#
      • 1...Sed5
        • 2.Sg5#
      • 1...Sf5
        • 2.Sg5#
        • 2.Bxf3#
      • 1...Qxd8!
  • Keys
    • 1.Qxg7!
      • threat
        • 2.d5#
      • 1...Kd5
        • 2.Qe5#
      • 1...Rxg7
        • 2.Sf6#
        • 2.Bxf3#
      • 1...Rb4
        • 2.Qe5#
      • 1...Rc5
        • 2.dxc5#
      • 1...Rd5
        • 2.Re3#
      • 1...Rf6
        • 2.Sxf6#
      • 1...Scd5
        • 2.Sg5#
      • 1...Sed5
        • 2.Qe5#
      • 1...Sf5
        • 2.Bxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • R(c);SBLOCK::R1(E)
    • R(c);SBLOCK::R(G)+P(H)
    • S(g);SBLOCK,S_CUTR(c)::S(J)
    • S(h);S_CUTR(i)::B(A),XP(a)
    • P(f);SBLOCK::R(G)+P(H)
  • Tries
    • Try
      • S(J);CHECK
      • Vars
        • P(j);XS(J)::B(A),XP(a)
      • Refutation
        • R(i);XS(J)
    • Try
      • Q(K);XB(l)
      • Threat
        • R1(E)
      • Vars
        • R(c);N_GUARD,XP(D)::S(J)
        • S(g);S_CUTR(c)::S(J)
        • S(h);S_CUTR(c)::S(J)
      • Refutation
        • Q(k);XQ(K)
  • Actual
    • Q(K);XP(j)
    • Threat
      • R(G)+P(H)
    • Vars
      • K(b);S_CUTR(c),S_FLIGHT::QAR1(K)
      • R(c);N_GUARD::QAR1(K)
      • R(c);OGATE,P_PINR(G)::R(G)+P(H),XR(c)
      • R(c);SBLOCK::R1(E)
      • R(i);N_GUARD::S(J),XR(i)
      • S(g);SBLOCK,S_CUTR(c)::S(J)
      • S(h);S_CUTR(c)::QAR1(K)
      • S(h);S_CUTR(i)::B(A),XP(a)
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Developed and maintained by Brian Stephenson.
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