MESON Chess Problem Database

Problem Display
PID: 233459 (8/1p1Rr3/1B1n4/Q3p2B/8/4p1N1/R2p2n1/K3kNr1 w - - 0 1)

Marysko, Milos

Freie Presse, 1973

8/1p1Rr3/1B1n4/Q3p2B/8/4p1N1/R2p2n1/K3kNr1

#2

8 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kf2
      • 2.Qxd2#
    • 1...e2
      • 2.Qxd2#
  • Tries
    • 1.Sxd2?
      • threat
        • 2.Sb1#
        • 2.Sdf1#
        • 2.Sb3#
        • 2.Sc4#
        • 2.Sde4#
      • 1...Kf2+
        • 2.Sdf1#
      • 1...exd2
        • 2.Qxd2#
      • 1...Rf1
        • 2.Sb1#
        • 2.Sdxf1#
        • 2.Sb3#
        • 2.Sc4#
        • 2.Sde4#
      • 1...Sc4
        • 2.Sf3#
        • 2.Sxc4#
      • 1...Se4
        • 2.Sf3#
        • 2.Sdxe4#
      • 1...Sb5
        • 2.Sf3#
      • 1...e4
        • 2.Sb1#
        • 2.Sdf1#
        • 2.Sb3#
        • 2.Sc4#
        • 2.Sdxe4#
      • 1...e2!
    • 1.Sxe3?
      • threat
        • 2.Sc2#
        • 2.Qxd2#
      • 1...Sxe3
        • 2.Qxd2#
      • 1...Sc4
        • 2.Sc2#
      • 1...Se4
        • 2.Sc2#
      • 1...Kf2+!
  • Keys
    • 1.Rxd2!
      • threat
        • 2.Ra2#
        • 2.Rb2#
        • 2.Rc2#
        • 2.Rxg2#
      • 1...exd2
        • 2.Qxd2#
      • 1...Sf4
        • 2.Ra2#
        • 2.Rb2#
        • 2.Rc2#
        • 2.Rg2#
        • 2.Rh2#
      • 1...Sh4
        • 2.Ra2#
        • 2.Rb2#
        • 2.Rc2#
        • 2.Rg2#
        • 2.Rh2#
      • 1...Sc4
        • 2.Re2#
      • 1...Se4
        • 2.Re2#
      • 1...Sb5
        • 2.Re2#
      • 1...e2
        • 2.Rd3#
        • 2.Rd5#
        • 2.R2xd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • K(a);P_PINS(B),S_FLIGHT::QAR2(E),XP(c)
    • P(e);N_GUARD::QAB1(E),XP(c)
  • Tries
    • Try
      • S(B);XP(c)
      • Threat
        • DUALS(5)
      • Vars
        • K(a);CHECK,P_SPINP(e),S_FLIGHT::R(C)+S(B)
        • P(e);OGATE,P_SPINP(e),XS(B)::QAB1(E),XP(e)
        • S(g);::QAB(E)+S(B),DCHECK
      • Refutation
        • P(e);
    • Try
      • S(B);XP(e)
      • Threat
        • DUALS(2)
      • Vars
        • S(d);XS(B)::QAB1(E),XP(c)
        • S(g);::S(B)
      • Refutation
        • K(a);CHECK,S_FLIGHT
  • Actual
    • R(C);XP(c)
    • Threat
      • DUALS(4)
    • Vars
      • P(e);OGATE,P_SPINP(e),XR(C)::QAB1(E),XP(e)
      • S(g);::QAB(E)+R(C),DCHECK
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