MESON Chess Problem Database

Problem Display
PID: 99599 (4b2K/8/1Q6/1pp2p2/7B/1N6/R1npn2R/3k4 w - - 0 1)

Iwanow, Eugeniusz

Pest megyei Sakkszovetseg, 1966

4b2K/8/1Q6/1pp2p2/7B/1N6/R1npn2R/3k4

#2

6 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sa1
      • 2.Rxd2#
    • 1...Se1
      • 2.Rxd2#
    • 1...Sa3
      • 2.Rxd2#
    • 1...Se3
      • 2.Rxd2#
    • 1...Sb4
      • 2.Rxd2#
    • 1...Scd4
      • 2.Rxd2#
    • 1...Sc1
      • 2.Rxd2#
    • 1...Sg1
      • 2.Rxd2#
    • 1...Sc3
      • 2.Rxd2#
    • 1...Sed4
      • 2.Rxd2#
    • 1...Sf4
      • 2.Rxd2#
  • Tries
    • 1.Ra1+?
      • 1...Sc1
        • 2.Rxd2#
      • 1...Sxa1!
    • 1.Rh1+?
      • 1...Se1
        • 2.Rxd2#
      • 1...Sg1!
    • 1.Qa5?
      • threat
        • 2.Qxd2#
      • 1...Sb4
        • 2.Rxd2#
      • 1...Sc3
        • 2.Rxd2#
      • 1...b4!
    • 1.Qxc5?
      • threat
        • 2.Qxc2#
      • 1...Sa1
        • 2.Rxd2#
      • 1...Se1
        • 2.Rxd2#
      • 1...Sa3
        • 2.Rxd2#
      • 1...Se3
        • 2.Rxd2#
      • 1...Sb4
        • 2.Rxd2#
      • 1...Scd4
        • 2.Rxd2#
      • 1...Sc3
        • 2.Rxd2#
      • 1...Sed4
        • 2.Rxd2#
      • 1...Sg3!
    • 1.Qd8?
      • threat
        • 2.Qxd2#
      • 1...Scd4
        • 2.Rxd2#
      • 1...Sed4
        • 2.Rxd2#
      • 1...Bd7!
    • 1.Qe6?
      • threat
        • 2.Qxe2#
      • 1...Se3
        • 2.Rxd2#
      • 1...Scd4
        • 2.Rxd2#
      • 1...Sc1
        • 2.Rxd2#
      • 1...Sg1
        • 2.Rxd2#
      • 1...Sc3
        • 2.Rxd2#
      • 1...Sg3
        • 2.Rxd2#
      • 1...Sed4
        • 2.Rxd2#
      • 1...Sf4
        • 2.Rxd2#
      • 1...Bh5!
    • 1.Qh6?
      • threat
        • 2.Qxd2#
      • 1...Se3
        • 2.Rxd2#
      • 1...Sf4
        • 2.Rxd2#
      • 1...f4!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qxd2#
      • 1...Scd4
        • 2.Rxd2#
      • 1...Sed4
        • 2.Rxd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 9
  • Sets
    • S(b);OGATE::R1(A),XP(c)
    • S(d);OGATE::R1(B),XP(c)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • S(d);OGATE,P_SPINS(d)::R1(B),XP(c)
      • Refutation
        • S(b);XR(A)
    • Try
      • R(B);CHECK
      • Vars
        • S(b);OGATE,P_SPINS(b)::R1(A),XP(c)
      • Refutation
        • S(d);P_SPINS(d)
    • Try
      • Q(E);
      • Threat
        • QAR1(E),XP(c)
      • Vars
        • S(b);OGATE::R1(A),XP(c)
        • S(d);OGATE::R1(B),XP(c)
      • Refutation
        • P(e);
    • Try
      • Q(E);XP(f)
      • Threat
        • QAB1(E),XS(b)
      • Vars
        • S(b);OGATE::R1(A),XP(c)
        • S(d);OGATE::R1(B),XP(c)
      • Refutation
        • S(d);
    • Try
      • Q(E);P_PINP(c)
      • Threat
        • QAR1(E),XP(c)
      • Vars
        • S(b);N_SPINP(c),OGATE::R1(A),XP(c)
        • S(d);N_SPINP(c),OGATE::R1(B),XP(c)
      • Refutation
        • B(h);N_SPINP(c)
    • Try
      • Q(E);
      • Threat
        • QAB1(E),XS(d)
      • Vars
        • S(b);OGATE::R1(A),XP(c)
        • S(d);OGATE::R1(B),XP(c)
      • Refutation
        • B(h);
    • Try
      • Q(E);
      • Threat
        • QAR1(E),XP(c)
      • Vars
        • S(b);OGATE::R1(A),XP(c)
        • S(d);OGATE::R1(B),XP(c)
      • Refutation
        • P(g);
  • Actual
    • Q(E);P_PINP(c)
    • Threat
      • QAR1(E),XP(c)
    • Vars
      • S(b);N_SPINP(c),OGATE::R1(A),XP(c)
      • S(d);N_SPINP(c),OGATE::R1(B),XP(c)
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