MESON Chess Problem Database

Problem Display
PID: 235018 (1Q3K2/5P1p/4N1pR/1P1k2bR/1n1p2P1/BP1p2p1/r2Nn3/5B2 w - - 0 1)

Erokhin, Vladimir Alekseevich

Revista Romana de Sah, 1977

1Q3K2/5P1p/4N1pR/1P1k2bR/1n1p2P1/BP1p2p1/r2Nn3/5B2

#2

12 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Qd6#
    • 1...Sa6
      • 2.Qd6#
    • 1...Sc6
      • 2.Qd6#
    • 1...gxh5
      • 2.Bg2#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Qe5#
      • 1...Ke4
        • 2.Bg2#
      • 1...Kxe6
        • 2.Qd6#
      • 1...Sc6!
    • 1.Sf4+?
      • 1...Kc5
        • 2.Se4#
        • 2.Rxg5#
      • 1...Sxf4!
    • 1.Sg7?
      • threat
        • 2.Rxg5#
      • 1...Kc5
        • 2.Rxg5#
      • 1...gxh5
        • 2.Qd6#
      • 1...Sc6
        • 2.Bg2#
        • 2.Qd6#
      • 1...Rxd2!
    • 1.Sd8?
      • threat
        • 2.Rxg5#
      • 1...Kc5
        • 2.Rxg5#
      • 1...gxh5
        • 2.Qd6#
      • 1...Sc6
        • 2.Bg2#
        • 2.Qd6#
      • 1...Rxd2!
    • 1.Rxg6?
      • threat
        • 2.Bg2#
        • 2.Rhxg5#
      • 1...Rxd2
        • 2.Bg2#
      • 1...Sg1
        • 2.Rhxg5#
      • 1...Sc3
        • 2.Rhxg5#
      • 1...Sf4
        • 2.Rhxg5#
      • 1...Sc6
        • 2.Bg2#
        • 2.Qd6#
      • 1...g2
        • 2.Bxg2#
        • 2.Rhxg5#
      • 1...h6
        • 2.Bg2#
      • 1...hxg6!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Rxg5#
      • 1...Kxc5
        • 2.Rxg5#
      • 1...gxh5
        • 2.Qd6#
      • 1...Sc6
        • 2.Bg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • S(e);::QAR1(K)
    • P(i);N_SPINB(h),XR(G)::B(A)
  • Tries
    • Try
      • S(B);
      • Threat
        • QAR1(K)
      • Vars
        • K(g);N_SPINB(h),S_FLIGHT::B(A)
        • K(g);N_SPINB(h),P_SPINP(i),S_FLIGHT,XS(H)::QAR1(K)
      • Refutation
        • S(e);
    • Try
      • S(H);CHECK
      • Refutation
        • S(b);XS(H)
    • Try
      • S(H);
      • Threat
        • R(G),XB(h)
      • Vars
        • K(g);P-FLIGHT,P_SPINS(e)::R(G),XB(h)
        • P(i);N_SPINB(h),XR(G)::QAR1(K)
      • Refutation
        • R(a);XS(B)
    • Try
      • S(H);
      • Threat
        • R(G),XB(h)
      • Vars
        • K(g);P-FLIGHT,P_SPINS(e)::R(G),XB(h)
        • P(i);N_SPINB(h),XR(G)::QAR1(K)
      • Refutation
        • R(a);XS(B)
    • Try
      • R(I);XP(i)
      • Threat
        • DUALS(2)
      • Vars
        • R(a);XS(B)::B(A)
        • S(b);::R(G),XB(h)
        • P(j);::B(A)
      • Refutation
        • P(j);XR(I)
  • Actual
    • S(H);
    • Threat
      • R(G),XB(h)
    • Vars
      • K(g);P-FLIGHT,P_SPINS(e),XS(H)::R(G),XB(h)
      • P(i);N_SPINB(h),XR(G)::QAR1(K)
      • S(e);::B(A)
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