MESON Chess Problem Database

Problem Display
PID: 24904 (8/3P2r1/N1nk1PN1/p2p2Pb/1rQ4K/Bnb1RppB/8/2R5 w - - 0 1)

Sander, Svante

1st HM., Fyens Stifstidende, 1925

8/3P2r1/N1nk1PN1/p2p2Pb/1rQ4K/Bnb1RppB/8/2R5

#2

11 + 11

3098 FIDE Album (1914-1944) (I) 1971
56 The Problemist 2005

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd7
      • 2.Re6#
    • 1...Bd4
      • 2.Qxc6#
    • 1...Sbd4
      • 2.Qc5#
    • 1...Scd4
      • 2.Qc7#
    • 1...Se7
      • 2.d8Q#
      • 2.d8R#
    • 1...d4
      • 2.Qe6#
  • Tries
    • 1.Bxb4+?
      • 1...Bxb4
        • 2.Qxc6#
      • 1...Sc5
        • 2.Bxc5#
        • 2.Qxc5#
      • 1...Sxb4
        • 2.Qc7#
      • 1...axb4!
    • 1.d8Q+?
      • 1...Rd7
        • 2.Re6#
        • 2.Qxd7#
      • 1...Sxd8!
    • 1.d8R+?
      • 1...Rd7
        • 2.Re6#
        • 2.Rxd7#
      • 1...Sxd8!
  • Keys
    • 1.Rd3!
      • threat
        • 2.Rxd5#
      • 1...Bg4
        • 2.Qxd5#
      • 1...Bd4
        • 2.Qxc6#
      • 1...Sbd4
        • 2.Qc5#
      • 1...Scd4
        • 2.Qc7#
      • 1...Se7
        • 2.d8Q#
        • 2.d8R#
      • 1...d4
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(k);SBLOCK,XP(K)::R1(C)
    • B(b);N_PINQ(E)::QAR1(E),XS(i)
    • S(a);N_PINQ(E)::QAB1(E)
    • S(i);N_PINQ(E)::QAB1(E)
    • S(i);N_GUARD,S_CUTR(k)::P=Q
    • P(g);N_PINQ(E)::QAR1(E)
  • Tries
    • Try
      • B(B);CHECK,N_SPINQ(E),XR(e)
      • Vars
        • B(b);XB(B)::QAR1(E),XS(i)
        • S(i);OGATE,XB(B)::QAB1(E)
      • Refutation
        • P(f);XB(B)
    • Try
      • P(K);CHECK
      • Refutation
        • S(i);XQ(K)
    • Try
      • P(K);CHECK
      • Refutation
        • S(i);XR(K)
  • Actual
    • R(C);P_PINP(g)
    • Threat
      • R1(C),XP(g)
    • Vars
      • B(h);N_PINQ(E)::QAR1(E),XP(g)
      • B(b);N_PINQ(E),N_SPINP(g)::QAR1(E),XS(i)
      • S(a);N_PINQ(E),N_SPINP(g)::QAB1(E)
      • S(i);N_PINQ(E),N_SPINP(g)::QAB1(E)
      • S(i);N_GUARD,S_CUTR(k)::P=Q
      • P(g);N_PINQ(E)::QAR1(E)
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