MESON Chess Problem Database

Problem Display
PID: 195097 (8/8/1n2N3/3pPp2/6p1/1Ppk4/2p2P2/2K3NQ w - - 0 1)

Gross, Izidor

Magyar Sakkvilag, 1918

8/8/1n2N3/3pPp2/6p1/1Ppk4/2p2P2/2K3NQ

#2

7 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sa4
      • 2.Qxd5#
    • 1...Sc4
      • 2.Qxd5#
    • 1...Sd7
      • 2.Qxd5#
    • 1...Sa8
      • 2.Qxd5#
    • 1...Sc8
      • 2.Qxd5#
    • 1...g3
      • 2.Qf3#
    • 1...d4
      • 2.Sf4#
      • 2.Sc5#
    • 1...f4
      • 2.Qh7#
  • Tries
    • 1.Se2?
      • threat
        • 2.S2f4#
        • 2.S6f4#
      • 1...f4
        • 2.S2xf4#
        • 2.S6xf4#
      • 1...Kxe2!
    • 1.Qg2?
      • 1...g3
        • 2.Qf3#
      • 1...Sa4
        • 2.Qxd5#
      • 1...Sc4
        • 2.Qxd5#
      • 1...Sd7
        • 2.Qxd5#
      • 1...Sa8
        • 2.Qxd5#
      • 1...Sc8
        • 2.Qxd5#
      • 1...d4
        • 2.Sf4#
        • 2.Sc5#
      • 1...f4!
    • 1.Qh3+?
      • 1...Ke4
        • 2.Qe3#
      • 1...g3
        • 2.Qxf5#
      • 1...gxh3!
    • 1.Qh5?
      • threat
        • 2.Qxf5#
      • 1...f4
        • 2.Qg6#
        • 2.Qf5#
        • 2.Qh7#
      • 1...Ke4!
    • 1.Qh6?
      • threat
        • 2.Qe3#
      • 1...Ke4
        • 2.Qe3#
      • 1...d4
        • 2.Sc5#
      • 1...f4
        • 2.Qg6#
        • 2.Qh7#
      • 1...Sc4!
  • Keys
    • 1.Sh3!
      • threat
        • 2.Shf4#
      • 1...Ke2
        • 2.Sef4#
      • 1...gxh3
        • 2.Qf3#
      • 1...f4
        • 2.Shxf4#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • S(g);N_GUARD::QAR2(C),XP(e)
    • P(d);N_GUARD::QAR2(C)
    • P(f);OGATEB::QAB(C)
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Refutation
        • K(c);S_FLIGHT,XS(B)
    • Try
      • Q(C);
      • Vars
        • P(d);N_GUARD::QAR2(C)
        • S(g);N_GUARD::QAR2(C),XP(e)
      • Refutation
        • P(f);
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR1(C)
        • P(d);OGATE,P_SPINP(d)::QAB(C),XP(f)
      • Refutation
        • P(d);XQ(C)
    • Try
      • Q(C);
      • Threat
        • QAB(C),XP(f)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • K(c);S_FLIGHT::QAR1(C)
        • P(e);SBLOCK::S(G)
      • Refutation
        • S(g);
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • K(c);S_FLIGHT::S(G)
      • P(d);N_GUARD,XS(B)::QAR2(C)
      • P(f);::S(B),XP(f)
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