MESON Chess Problem Database

Problem Display
PID: 87893 (2B5/2pn2p1/2PN2Pb/4k1nP/1Q1RP2B/4NpP1/3K1P2/8 w - - 0 1)

Wrobel, Marian

American Chess Problemist, 1950

2B5/2pn2p1/2PN2Pb/4k1nP/1Q1RP2B/4NpP1/3K1P2/8

#2

13 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sxe4+
      • 2.Rxe4#
    • 1...Se6
      • 2.Sf7#
      • 2.Rd5#
    • 1...Sc5
      • 2.Sg4#
    • 1...Sb6
      • 2.Sg4#
    • 1...Sb8
      • 2.Sg4#
    • 1...Sf8
      • 2.Sg4#
    • 1...cxd6
      • 2.Qxd6#
  • Tries
    • 1.Bxd7?
      • threat
        • 2.Sg4#
      • 1...Sxe4+
        • 2.Rxe4#
      • 1...Sh3
        • 2.Sf7#
        • 2.Rd5#
        • 2.Qc5#
      • 1...Se6
        • 2.Sf7#
        • 2.Rd5#
      • 1...Sf7
        • 2.Sxf7#
        • 2.Rd5#
        • 2.Qc5#
      • 1...Sh7
        • 2.Sf7#
        • 2.Rd5#
        • 2.Qc5#
      • 1...Kf6!
  • Keys
    • 1.Sdf5!
      • 1...Sxe4+
        • 2.Rxe4#
      • 1...Ke6
        • 2.Qe7#
      • 1...Kf6
        • 2.Qe7#
      • 1...Sh3
        • 2.Qe7#
      • 1...Se6
        • 2.Rd5#
      • 1...Sf7
        • 2.Qe7#
      • 1...Sh7
        • 2.Qe7#
      • 1...Sc5
        • 2.Sg4#
      • 1...Sb6
        • 2.Sg4#
      • 1...Sf6
        • 2.Sc4#
      • 1...Sb8
        • 2.Sg4#
      • 1...Sf8
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • S(c);CHECK,OGATE,P_PINS(C),XP(G)::R1(F),XS(c)
    • S(f);::S(C)
    • P(e);OGATE,XS(K)::QAB1(E),XP(e)
  • Tries
    • Try
      • B(M);XS(f)
      • Threat
        • S(C)
      • Vars
        • S(c);CHECK,OGATE,P_PINS(C),XP(G)::R1(F),XS(c)
      • Refutation
        • K(b);P_SPINS(c),S_FLIGHT
  • Actual
    • S(K);
    • Vars
      • S(c);CHECK,OGATE,P_PINS(C),XP(G)::R1(F),XS(c)
      • K(b);P-FLIGHT,P_SPINS(f)::QAR1(E)
      • K(b);P_SPINS(c),S_FLIGHT::QAB1(E)
      • S(c);N_GUARD,P_PINS(C)::QAR2(E)
      • S(c);P_PINS(C),SBLOCK::R1(F)
      • S(f);::S(C)
      • S(f);SBLOCK::S(C)
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Developed and maintained by Brian Stephenson.
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