MESON Chess Problem Database

Problem Display
PID: 110313 (8/qpp4Q/6r1/1RPB1Pp1/p3Kp1p/8/rpk2N2/1N1R4 w - - 0 1)

Mlynka, Karol

Hlas l'udu, 1974

8/qpp4Q/6r1/1RPB1Pp1/p3Kp1p/8/rpk2N2/1N1R4

#2

9 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc5
      • 2.Rxc5#
    • 1...a3
      • 2.Bb3#
  • Tries
    • 1.Ke5?
      • threat
        • 2.Be4#
      • 1...Re6+
        • 2.fxe6#
      • 1...Qxc5
        • 2.Rxc5#
      • 1...Rd6
        • 2.f6#
      • 1...Ra3!
    • 1.Sa3+?
      • 1...Kc3
        • 2.Rd3#
      • 1...Rxa3!
  • Keys
    • 1.Kd4!
      • threat
        • 2.Be4#
      • 1...Qxc5+
        • 2.Rxc5#
      • 1...Ra3
        • 2.Sxa3#
      • 1...Rd6
        • 2.f6#
      • 1...Re6
        • 2.fxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(i);OGATE,XP(F)::R(E),XQ(i)
    • P(d);N_GUARD::B(G)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Threat
        • B(G)
      • Vars
        • R(h);CHECK,OGATE::QAB(I)+P(H),XR(h)
        • Q(i);OGATE,P_PINB(G),XP(F)::R(E),XQ(i)
        • R(h);::QAB(I)+P(H)
      • Refutation
        • R(a);
    • Try
      • S(A);CHECK
      • Vars
        • K(c);P-FLIGHT::R1(B)
      • Refutation
        • R(a);XS(A)
  • Actual
    • K(D);P-FLIGHT,P_SPINP(F)
    • Threat
      • B(G)
    • Vars
      • Q(i);CHECK,OGATE,XP(F)::R(E),XQ(i)
      • R(a);N_GUARD::S(A),XR(a)
      • R(h);P_PINB(G)::QAB(I)+P(H)
      • R(h);OGATE::QAB(I)+P(H),XR(h)
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