MESON Chess Problem Database

Problem Display
PID: 121305 (1r6/7p/8/r3p3/QNp5/1P5K/1p1p2N1/1nbk1B2 w - - 0 1)

Marik, Josef V

Source?, 1903

1r6/7p/8/r3p3/QNp5/1P5K/1p1p2N1/1nbk1B2

#2

6 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rab5
      • 2.bxc4#
    • 1...Rc5
      • 2.bxc4#
    • 1...Rd5
      • 2.bxc4#
    • 1...cxb3
      • 2.Qxb3#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Sce3#
        • 2.Sge3#
      • 1...Rxb3+
        • 2.Sce3#
      • 1...Kxc2!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Sde3#
      • 1...Kc2
        • 2.Sge3#
      • 1...Rxd5
        • 2.b4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • R(g);N_GUARD::QAB(E)+P(C),XP(f)
    • P(f);OGATE,P_SPINP(f),XP(C)::QAB(E),XP(f)
  • Tries
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Vars
        • R(j);CHECK,XP(C)::S(F)
      • Refutation
        • K(c);S_FLIGHT,XS(F)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • K(c);S_FLIGHT::S(B)
      • R(g);N_GUARD,XS(F)::QAB(E)+P(C)
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