MESON Chess Problem Database

Problem Display
PID: 278006 (8/5R1n/3N1PQn/1N6/1pK1pkp1/b3R3/5B2/8 w - - 0 1)

Stojnic, Dragan

Comm., Pat a Mat, 2016

8/5R1n/3N1PQn/1N6/1pK1pkp1/b3R3/5B2/8

#2

8 + 7

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Rxe4#
      • 2.Qxe4#
    • 1...Sf5
      • 2.Qxf5#
    • 1...Sxf7
      • 2.Qf5#
    • 1...Sg8
      • 2.Qf5#
    • 1...g3
      • 2.Qxg3#
  • Tries
    • 1.Kd4?
      • threat
        • 2.Bg3#
      • 1...Sf5+
        • 2.Qxf5#
      • 1...g3
        • 2.Bxg3#
        • 2.Qxg3#
      • 1...Bb2+!
    • 1.Sd4?
      • threat
        • 2.Rxe4#
      • 1...Ke5
        • 2.Bg3#
      • 1...Sg5!
    • 1.Rb3?
      • threat
        • 2.Bg3#
      • 1...Ke5
        • 2.Qxe4#
      • 1...Sf5
        • 2.Qxf5#
      • 1...g3
        • 2.Bxg3#
        • 2.Qxg3#
      • 1...e3!
    • 1.Re7?
      • threat
        • 2.R7xe4#
      • 1...Sxf6
        • 2.Qxh6#
      • 1...Sg5!
    • 1.Qxh6+?
      • 1...Ke5
        • 2.Rxe4#
        • 2.Re7#
      • 1...Sg5!
  • Keys
    • 1.Rg7!
      • threat
        • 2.Qxe4#
      • 1...Ke5
        • 2.Rxe4#
      • 1...Sxf6
        • 2.Qg5#
      • 1...Sf5
        • 2.Qxf5#
      • 1...Sg5
        • 2.Qxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • S(f);N_GUARD::QAR1(G),XS(f)
    • S(f);N_GUARD,XR(H)::QAR1(G)
    • S(f);N_GUARD::QAR1(G)
    • P(e);OGATE::QAB1(G),XP(e)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Threat
        • B(A)
      • Vars
        • S(f);CHECK,N_GUARD::QAR1(G),XS(f)
      • Refutation
        • B(a);CHECK
    • Try
      • S(D);
      • Threat
        • R1(B),XP(c)
      • Vars
        • K(d);N_GUARD,P_SPINP(c),S_FLIGHT::B(A)
      • Refutation
        • S(g);
    • Try
      • R(B);
      • Threat
        • B(A)
      • Vars
        • K(d);N_GUARD,S_FLIGHT::QAR1(G),XP(c)
        • S(f);N_GUARD::QAR1(G),XS(f)
      • Refutation
        • P(c);
    • Try
      • R(H);
      • Threat
        • R1(H),XP(c)
      • Vars
        • S(g);N_GUARD,XP(F)::QAB(G),XS(f)
      • Refutation
        • S(g);
    • Try
      • Q(G);CHECK,XS(f)
      • Refutation
        • S(g);P_SPINS(g)
  • Actual
    • R(H);
    • Threat
      • QAR1(G),XP(c)
    • Vars
      • K(d);N_GUARD,P_SPINP(c),S_FLIGHT::R1(B),XP(c)
      • S(g);N_GUARD,XP(F)::QAB1(G)
      • S(f);N_GUARD::QAR1(G),XS(f)
      • S(g);N_GUARD::QAB1(G),XS(g)
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