MESON Chess Problem Database

Problem Display
PID: 94661 (2r4k/8/2n3RK/4R3/8/8/8/2Q5 w - - 0 1)

Pypa, Volodimir Iosifovich

Magadansky Komsomolets, 1991

2r4k/8/2n3RK/4R3/8/8/8/2Q5

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rc7
      • 2.Re8#
    • 1...Re8
      • 2.Rxe8#
    • 1...Sb4
      • 2.Qxc8#
    • 1...Sd4
      • 2.Qxc8#
    • 1...Sa5
      • 2.Qxc8#
    • 1...Sxe5
      • 2.Qxc8#
    • 1...Sb8
      • 2.Qxc8#
    • 1...Sd8
      • 2.Re8#
  • Tries
    • 1.Kg5?
      • threat
        • 2.Qh1#
      • 1...Kh7
        • 2.Qh1#
      • 1...Rc7!
    • 1.Kh5?
      • threat
        • 2.Qh6#
      • 1...Kh7
        • 2.Qh6#
      • 1...Rc7!
    • 1.Re7?
      • threat
        • 2.Rh7#
      • 1...Rc7
        • 2.Re8#
      • 1...Sxe7!
    • 1.Qf4?
      • threat
        • 2.Qf6#
      • 1...Rc7
        • 2.Re8#
        • 2.Qf8#
      • 1...Rf8
        • 2.Qxf8#
      • 1...Rg8!
    • 1.Qg5?
      • threat
        • 2.Qf6#
      • 1...Rc7
        • 2.Re8#
        • 2.Rg8#
      • 1...Rg8
        • 2.Rxg8#
      • 1...Rf8!
    • 1.Qf1?
      • threat
        • 2.Qf6#
      • 1...Rc7
        • 2.Re8#
        • 2.Qf8#
      • 1...Rf8
        • 2.Qxf8#
      • 1...Rg8!
  • Keys
    • 1.Qh1!
      • threat
        • 2.Kg5#
      • 1...Rc7
        • 2.Re8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • R(b);N_GUARD::R(B)
    • R(b);N_GUARD::R(B),XR(b)
    • S(a);OGATE::QAR(A),XR(b)
    • S(a);OGATE,XR(B)::QAR(A),XR(b)
    • S(a);S_CUTR(b)::R(B)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Threat
        • QAB(A)
      • Vars
        • K(c);P-FLIGHT::QAR(A)
      • Refutation
        • R(b);
    • Try
      • K(D);P-FLIGHT
      • Threat
        • QAR2(A)
      • Vars
        • K(c);P-FLIGHT::QAR1(A)
      • Refutation
        • R(b);
    • Try
      • R(B);
      • Threat
        • R1(B)
      • Vars
        • R(b);N_GUARD::R(B)
      • Refutation
        • S(a);XR(B)
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • R(b);N_GUARD::QAR2(A),XR(b)
      • Refutation
        • R(b);
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • R(b);N_GUARD::R1(C),XR(b)
      • Refutation
        • R(b);
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • R(b);N_GUARD::QAR2(A),XR(b)
      • Refutation
        • R(b);
  • Actual
    • Q(A);
    • Threat
      • QAR(A)+K(D)
    • Vars
      • R(b);N_GUARD::R(B)
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