MESON Chess Problem Database

Problem Display
PID: 203831 (2Q2r2/2B2p2/B3P2b/2Kp2pR/2pNk3/6P1/bpP2P2/4N3 w - - 0 1)

Labai, Zoltan

3rd Prize, Pravda (Bratislava), 1974

(First published on Fri Nov 22 1974)

2Q2r2/2B2p2/B3P2b/2Kp2pR/2pNk3/6P1/bpP2P2/4N3

#2

11 + 9

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...c3
      • 2.Bd3#
    • 1...g4
      • 2.Re5#
    • 1...fxe6
      • 2.Qxe6#
  • Tries
    • 1.Sef3?
      • threat
        • 2.Sd2#
      • 1...c3
        • 2.Bd3#
      • 1...g4
        • 2.Re5#
      • 1...b1S!
    • 1.Bxc4?
      • threat
        • 2.Bd3#
      • 1...dxc4
        • 2.Qb7#
      • 1...Bxc4!
    • 1.Qd7?
      • threat
        • 2.Qxd5#
      • 1...fxe6
        • 2.Qxe6#
      • 1...c3
        • 2.Bd3#
      • 1...Rd8!
    • 1.exf7?
      • threat
        • 2.Qg4#
        • 2.Qf5#
        • 2.Qe6#
      • 1...Rxf7
        • 2.Qe6#
      • 1...Re8
        • 2.Qg4#
        • 2.Qf5#
        • 2.Qxe8#
        • 2.fxe8Q#
        • 2.fxe8R#
      • 1...Bg7
        • 2.Qg4#
        • 2.Qf5#
      • 1...g4
        • 2.Re5#
        • 2.Qf5#
        • 2.Qe6#
      • 1...Rxc8!
    • 1.e7?
      • threat
        • 2.Qg4#
        • 2.Qf5#
      • 1...g4
        • 2.Re5#
        • 2.Qf5#
      • 1...f5
        • 2.Qe6#
      • 1...Rxc8!
  • Keys
    • 1.Sg2!
      • threat
        • 2.f3#
      • 1...fxe6
        • 2.Qxe6#
      • 1...g4
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • P(c);OGATE::B(H)
    • P(f);OGATE::R1(G)
    • P(h);OGATE,XP(I)::QAR2(K),XP(h)
  • Tries
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • P(c);OGATE::B(H)
        • P(f);OGATE::R1(G)
      • Refutation
        • P(b);
    • Try
      • B(H);XP(c)
      • Threat
        • B(H)
      • Vars
        • P(e);OGATEB,XB(H)::QAB(K)
      • Refutation
        • B(a);XB(H)
    • Try
      • Q(K);
      • Threat
        • QAB1(K),XP(e)
      • Vars
        • P(h);OGATE,XP(I)::QAR2(K),XP(h)
        • P(c);OGATE::B(H)
      • Refutation
        • R(i);
    • Try
      • P(I);XP(h)
      • Threat
        • DUALS(3)
      • Vars
        • R(i);XP(I)::QAR2(K)
      • Refutation
        • R(i);P_PINB(J),XQ(K)
    • Try
      • P(I);
      • Threat
        • DUALS(2)
      • Vars
        • P(h);N_GUARD::QAR2(K)
      • Refutation
        • R(i);P_PINB(J),XQ(K)
  • Actual
    • S(A);
    • Threat
      • P(C)
    • Vars
      • P(h);OGATE,XP(I)::QAR2(K),XP(h)
      • P(f);OGATE::R1(G)
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