MESON Chess Problem Database

Problem Display
PID: 231653 (8/8/3p4/2pP1p2/2Rb1knQ/4NPpb/2p3p1/2B1N1K1 w - - 0 1)

Wrobel, Marian

Magyar Sakkvilag, 1927

8/8/3p4/2pP1p2/2Rb1knQ/4NPpb/2p3p1/2B1N1K1

#2

8 + 10

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Sd3#
  • Tries
    • 1.Ra4?
      • 1...Ke5
        • 2.Sd3#
      • 1...c4!
    • 1.Rxd4+?
      • 1...cxd4
        • 2.Sc4#
        • 2.Sxg4#
      • 1...Ke5!
    • 1.Qg5+?
      • 1...Ke5
        • 2.Sd3#
        • 2.Qxf5#
      • 1...Kxg5!
    • 1.Qh6+?
      • 1...Ke5
        • 2.Sd3#
      • 1...Sxh6!
  • Keys
    • 1.Qh5!
      • threat
        • 2.Qxf5#
      • 1...Ke5
        • 2.Qxf5#
      • 1...Sxe3
        • 2.Sd3#
      • 1...Sf2
        • 2.Sg4#
      • 1...Sh2
        • 2.Sd3#
      • 1...Se5
        • 2.Qh6#
      • 1...Sf6
        • 2.Sd3#
      • 1...Sh6
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(f);N_SPINB(e),N_SPINS(g),S_FLIGHT::S(B)
  • Tries
    • Try
      • R(F);
      • Vars
        • K(f);N_SPINB(e),N_SPINS(g),S_FLIGHT::S(B)
      • Refutation
        • P(h);N_SPINB(e)
    • Try
      • R(F);CHECK,N_SPINS(D),XB(e)
      • Refutation
        • K(f);N_SPINS(g),S_FLIGHT
    • Try
      • Q(G);CHECK,N_PINS(g)
      • Refutation
        • K(f);N_SPINB(e),S_FLIGHT,XQ(G)
    • Try
      • Q(G);CHECK,N_PINS(g)
      • Vars
        • K(f);N_SPINB(e),S_FLIGHT::S(B)
      • Refutation
        • S(g);XQ(G)
  • Actual
    • Q(G);N_PINS(g)
    • Threat
      • QAR1(G),XP(i)
    • Vars
      • K(f);N_SPINB(e),P_SPINP(i),S_FLIGHT::QAR1(G),XP(i)
      • S(g);P_SPINS(g),XS(D)::S(B)
      • S(g);N_PINS(D)::B(A)+S(D)
      • S(g);::S(B)
      • S(g);N_GUARD,SBLOCK::QAB(G)
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