MESON Chess Problem Database

Problem Display
PID: 239127 (1K1N2n1/4pp2/pB6/r2k1N2/p1RP4/3Pn2p/6p1/1Q6 w - - 0 1)

Dyachuk, Vasyl Vasilovich

4th HM., Sachove umeni (Ceskoslovensky sach), 1995

1K1N2n1/4pp2/pB6/r2k1N2/p1RP4/3Pn2p/6p1/1Q6

#2

8 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Rxc5#
  • Tries
    • 1.Bxa5?
      • threat
        • 2.Rc5#
        • 2.Qb7#
      • 1...Sxc4
        • 2.Qb7#
      • 1...Sxf5!
    • 1.Bc5?
      • threat
        • 2.Sxe3#
        • 2.Qb7#
      • 1...Rxc5
        • 2.Rxc5#
      • 1...Sxc4
        • 2.Qb7#
      • 1...Sxf5
        • 2.Qb7#
      • 1...g1Q
        • 2.Qb7#
      • 1...g1B
        • 2.Qb7#
      • 1...Sd1
        • 2.Qb7#
      • 1...Sf1
        • 2.Qb7#
      • 1...Sc2
        • 2.Qb7#
      • 1...Sg4
        • 2.Qb7#
      • 1...Rb5+!
    • 1.Bc7?
      • threat
        • 2.Sxe3#
        • 2.Qb7#
      • 1...Sxc4
        • 2.Qb7#
      • 1...Sxf5
        • 2.Qb7#
      • 1...g1Q
        • 2.Qb7#
      • 1...g1B
        • 2.Qb7#
      • 1...Rc5
        • 2.Sxe3#
        • 2.Rxc5#
      • 1...Sd1
        • 2.Qb7#
      • 1...Sf1
        • 2.Qb7#
      • 1...Sc2
        • 2.Qb7#
      • 1...Sg4
        • 2.Qb7#
      • 1...Rb5+!
    • 1.Qe1?
      • threat
        • 2.Qxa5#
      • 1...Sxc4
        • 2.Qe4#
      • 1...Sxf5
        • 2.Qe5#
      • 1...Rc5
        • 2.Rxc5#
      • 1...Rb5!
    • 1.Qb4?
      • threat
        • 2.Sxe3#
        • 2.Qxa5#
      • 1...Sxc4
        • 2.Qxc4#
      • 1...g1Q
        • 2.Qxa5#
      • 1...g1B
        • 2.Qxa5#
      • 1...Rb5
        • 2.Sxe3#
      • 1...Rc5
        • 2.Rxc5#
        • 2.Qxc5#
      • 1...Sd1
        • 2.Qxa5#
      • 1...Sf1
        • 2.Qxa5#
      • 1...Sc2
        • 2.Qxa5#
      • 1...Sg4
        • 2.Qxa5#
      • 1...Sxf5!
    • 1.Qb5+?
      • 1...axb5
        • 2.Rc5#
      • 1...Rxb5!
  • Keys
    • 1.Qa2!
      • threat
        • 2.Rc5#
      • 1...Sxc4
        • 2.Qxc4#
      • 1...Sxf5
        • 2.Rc6#
      • 1...Rc5
        • 2.Rxc5#

There are these versions: 239128

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(e);N_GUARD::R1(C),XR(e)
  • Tries
    • Try
      • B(F);XR(e)
      • Threat
        • DUALS(2)
      • Vars
        • S(b);XR(C)::QAB(A)
      • Refutation
        • S(b);XS(E)
    • Try
      • B(F);
      • Threat
        • DUALS(2)
      • Vars
        • R(e);OGATE,XB(F)::R1(C),XR(e)
        • S(b);XR(C)::QAB(A)
        • S(b);XS(E)::QAB(A)
        • P(a);::QAB(A)
        • S(b);::QAB(A)
      • Refutation
        • R(e);CHECK
    • Try
      • B(F);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);XR(C)::QAB(A)
        • S(b);XS(E)::QAB(A)
        • P(a);::QAB(A)
        • S(b);::QAB(A)
      • Refutation
        • R(e);CHECK
    • Try
      • Q(A);
      • Threat
        • QAR(A),XR(e)
      • Vars
        • S(b);OGATE,XR(C)::QAB1(A)
        • S(b);OGATE,XS(E)::QAR1(A)
        • R(e);N_GUARD::R1(C),XR(e)
      • Refutation
        • R(e);P_PINB(F)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);OGATE,XR(C)::QAB1(A),XS(b)
        • P(a);::QAR(A),XR(e)
        • R(e);P_PINB(F)::S(E),XS(b)
        • S(b);::QAR(A),XR(e)
      • Refutation
        • S(b);XS(E)
    • Try
      • Q(A);CHECK
      • Vars
        • P(g);XQ(A)::R1(C)
      • Refutation
        • R(e);P_PINB(F),XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAB(A)+R(C),DCHECK
    • Vars
      • S(b);OGATE,P_SPINS(b),XR(C)::QAB1(A),XS(b)
      • S(b);N_GUARD,XS(E)::QAB(A)+R(C)
      • R(e);::QAB(A)+R(C),DCHECK,XR(e)
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