MESON Chess Problem Database

Problem Display
PID: 7189 (8/1R4b1/5p1p/3N4/K2R4/2P1BP1p/2k3rQ/2N5 w - - 0 1)

Golubenko, Vladimir Aleksandrovich

Melnichenko, Viktor Oleksandrovich

1st Prize, St. Petersburg Quick Ty., 1998

8/1R4b1/5p1p/3N4/K2R4/2P1BP1p/2k3rQ/2N5

#2

9 + 6

145 StrateGems 1998

SOLUTION

  • SOUND
  • Sets
    • 1...Rd2
      • 2.Qxd2#
    • 1...Re2
      • 2.Qxe2#
    • 1...Rf2
      • 2.Qxf2#
  • Tries
    • 1.Ka3?
      • threat
        • 2.Rb2#
      • 1...Rd2
        • 2.Qxd2#
      • 1...Bf8+!
    • 1.Sd3?
      • threat
        • 2.Se1#
      • 1...Rd2
        • 2.Qxd2#
      • 1...Kd1!
    • 1.Bd2?
      • threat
        • 2.Se3#
      • 1...Kd1
        • 2.Se3#
      • 1...Rxd2
        • 2.Qxd2#
      • 1...Re2!
    • 1.Rd2+?
      • 1...Rxd2
        • 2.Qxd2#
      • 1...Kxc1!
    • 1.Rb3?
      • threat
        • 2.Sb4#
      • 1...Rd2
        • 2.Qxd2#
      • 1...Bf8!
    • 1.Qg1?
      • threat
        • 2.Qd1#
      • 1...Rd2
        • 2.Rxd2#
      • 1...Rxg1!
    • 1.Qh1?
      • threat
        • 2.Qd1#
      • 1...Rd2
        • 2.Rxd2#
      • 1...Rg1!
  • Keys
    • 1.Se2!
      • threat
        • 2.Rd2#
      • 1...Rxe2
        • 2.Qxe2#
      • 1...Rg4
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(b);OGATE::QAR1(B),XR(b)
    • R(b);OGATE::QAR2(B),XR(b)
    • R(b);OGATE::QAR(B),XR(b)
  • Tries
    • Try
      • K(F);P-FLIGHT
      • Threat
        • R1(I)
      • Vars
        • R(b);OGATE::QAR1(B),XR(b)
      • Refutation
        • B(f);CHECK
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • R(b);OGATE::QAR1(B),XR(b)
      • Refutation
        • K(a);N_SPINR(b),S_FLIGHT
    • Try
      • B(D);N_PINR(b)
      • Threat
        • S(H)
      • Vars
        • K(a);S_FLIGHT::S(H)
        • R(b);OGATE,P_SPINR(b),XB(D)::QAR1(B),XR(b)
      • Refutation
        • R(b);
    • Try
      • R(G);CHECK,N_PINR(b)
      • Vars
        • R(b);OGATE,P_SPINR(b),XR(G)::QAR1(B),XR(b)
      • Refutation
        • K(a);P-FLIGHT,XS(A)
    • Try
      • R(I);
      • Threat
        • S(H)
      • Vars
        • R(b);OGATE::QAR1(B),XR(b)
      • Refutation
        • B(f);
    • Try
      • Q(B);N_PINR(b)
      • Threat
        • QAB1(B)
      • Vars
        • R(b);N_GUARD::R1(G),XR(b)
      • Refutation
        • R(b);XQ(B)
    • Try
      • Q(B);N_PINR(b)
      • Threat
        • QAB1(B)
      • Vars
        • R(b);N_GUARD::R1(G),XR(b)
      • Refutation
        • R(b);
  • Actual
    • S(A);N_PINR(b)
    • Threat
      • R1(G)
    • Vars
      • R(b);OGATE,P_SPINR(b),XS(A)::QAR2(B),XR(b)
      • R(b);P_PINR(G)::QAR(B)+S(A)
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