MESON Chess Problem Database

Problem Display
PID: 80906 (1b1r4/pKP1p1N1/4n2p/R1pk3r/N2p4/P5P1/1n6/1B1R1QB1 w - - 0 1)

Valuska, Jan

2nd Prize, Podtatranske noviny, 1981

1b1r4/pKP1p1N1/4n2p/R1pk3r/N2p4/P5P1/1n6/1B1R1QB1

#2

11 + 11

6424 Czech Album (1979-1981) 1986

SOLUTION

  • SOUND
  • Tries
    • 1.Qe2?
      • threat
        • 2.Qxe6#
      • 1...Kd6
        • 2.Qxe6#
      • 1...Sxc7
        • 2.Rxd4#
      • 1...Sxg7
        • 2.Rxd4#
      • 1...Rd6
        • 2.Sc3#
      • 1...Sf4
        • 2.Rxd4#
      • 1...Sg5
        • 2.Rxd4#
      • 1...Sf8
        • 2.Rxd4#
      • 1...Re5!
    • 1.Qc4+?
      • 1...Kxc4
        • 2.Ba2#
      • 1...Ke5
        • 2.Qxe6#
      • 1...Kd6
        • 2.Qxe6#
      • 1...Sxc4!
    • 1.Qa6?
      • threat
        • 2.Qxe6#
      • 1...Ke5
        • 2.Qxe6#
      • 1...Sxc7
        • 2.Rxc5#
      • 1...Sxg7
        • 2.Rxc5#
      • 1...Re5
        • 2.Sc3#
      • 1...Sf4
        • 2.Rxc5#
      • 1...Sg5
        • 2.Rxc5#
      • 1...Sf8
        • 2.Rxc5#
      • 1...Rd6!
    • 1.Qf5+?
      • 1...Kc4
        • 2.Ba2#
      • 1...Kd6
        • 2.Qxe6#
      • 1...Rxf5!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Qxe6#
      • 1...Kc4
        • 2.Ba2#
      • 1...Ke5
        • 2.Qxe6#
      • 1...Kd6
        • 2.Qxe6#
      • 1...Re5
        • 2.Rxd4#
      • 1...Rd6
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAB1(C),XS(f)
      • Vars
        • K(d);P-FLIGHT::QAR1(C),XS(f)
        • S(f);N_GUARD,XP(J)::R1(B),XP(b)
        • S(f);N_GUARD,XS(K)::R1(B),XP(b)
        • R(k);SBLOCK::S(G)
        • S(f);N_GUARD::R1(B),XP(b)
      • Refutation
        • R(e);
    • Try
      • Q(C);CHECK
      • Vars
        • K(d);N_SPINP(b),S_FLIGHT,XQ(C)::B(A)
        • K(d);N_SPINP(b),OGATE,P-FLIGHT,P_SPINP(c)::QAR1(C),XS(f)
        • K(d);OGATE,P-FLIGHT::QAR1(C),XS(f)
      • Refutation
        • S(a);XQ(C)
    • Try
      • Q(C);
      • Threat
        • QAB1(C),XS(f)
      • Vars
        • K(d);N_SPINP(b),P-FLIGHT,P_SPINP(c)::QAR1(C),XS(f)
        • S(f);N_GUARD,XP(J)::R1(H),XP(c)
        • S(f);N_GUARD,XS(K)::R1(H),XP(c)
        • R(e);SBLOCK::S(G)
        • S(f);N_GUARD::R1(H),XP(c)
      • Refutation
        • R(k);
    • Try
      • Q(C);CHECK
      • Vars
        • K(d);N_SPINP(b),S_FLIGHT::B(A)
        • K(d);P-FLIGHT::QAR1(C),XS(f)
      • Refutation
        • R(e);XQ(C)
  • Actual
    • Q(C);P_PINS(f)
    • Threat
      • QAB1(C),XS(f)
    • Vars
      • K(d);N_SPINP(b),S_FLIGHT::B(A)
      • K(d);N_SPINP(b),N_SPINS(f),P-FLIGHT,P_SPINP(c)::QAR1(C),XS(f)
      • K(d);N_SPINS(f),P-FLIGHT::QAR1(C),XS(f)
      • R(e);SBLOCK::R1(B),XP(b)
      • R(k);SBLOCK::R1(H),XP(c)
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