MESON Chess Problem Database

Problem Display
PID: 132073 (8/8/2P1r1pq/1KB4p/pP2Pk2/rP2p2P/p1B1P2P/Q5R1 w - - 0 1)

Savournin, Jacques

1st Prize, Michel MT, 1981

8/8/2P1r1pq/1KB4p/pP2Pk2/rP2p2P/p1B1P2P/Q5R1

#2

12 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qg5
      • 2.Rf1#
    • 1...Rxe4
      • 2.Qf6#
    • 1...Re5
      • 2.Qf1#
    • 1...Rd6
      • 2.Bxd6#
    • 1...Rf6
      • 2.Qxf6#
    • 1...Re7
      • 2.Qf6#
    • 1...Re8
      • 2.Qf6#
    • 1...h4
      • 2.Rg4#
    • 1...g5
      • 2.Rf1#
  • Tries
    • 1.Bd4?
      • threat
        • 2.Qf1#
      • 1...Re5+
        • 2.Bxe5#
      • 1...Qg5+!
    • 1.Bd6+?
      • 1...Re5+
        • 2.Bxe5#
        • 2.Qxe5#
      • 1...Rxd6!
    • 1.Be7?
      • threat
        • 2.Rf1#
      • 1...Qg5+
        • 2.Bxg5#
      • 1...Rxe7
        • 2.Qf6#
      • 1...Rf6
        • 2.Qxf6#
      • 1...Re5+!
    • 1.Rg3?
      • threat
        • 2.Bxe3#
      • 1...Rxe4
        • 2.Qf6#
      • 1...Qg5
        • 2.Rf3#
      • 1...Re5
        • 2.Qf1#
      • 1...Rxb3!
    • 1.e5?
      • threat
        • 2.Qd4#
      • 1...Rxe5
        • 2.Qf1#
      • 1...Rd6!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Bxe3#
      • 1...Rxe4
        • 2.Qf6#
      • 1...Qg5
        • 2.Rf1#
      • 1...Re5
        • 2.Qxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 6
  • Sets
    • Q(i);P_PINB(K),SBLOCK::R(B)
    • R(g);N_GUARD,XP(I)::QAR2(A)
    • R(g);P_PINB(K),SBLOCK::QAR(A)
    • R(g);N_GUARD::B(K),XR(g)
    • R(g);N_GUARD::QAR2(A),XR(g)
    • R(g);N_GUARD::QAR2(A)
    • P(f);N_GUARD::R1(B)
    • P(h);SBLOCK::R(B)
  • Tries
    • Try
      • B(K);
      • Threat
        • QAR(A)
      • Vars
        • R(g);CHECK,N_GUARD::B(K),XR(g)
      • Refutation
        • Q(i);CHECK
    • Try
      • B(K);CHECK
      • Refutation
        • R(g);XB(K)
    • Try
      • B(K);
      • Threat
        • R(B)
      • Vars
        • Q(i);CHECK,N_GUARD::B(K),XQ(i)
        • R(g);N_GUARD,XB(K)::QAR2(A)
        • R(g);N_GUARD::QAR2(A),XR(g)
      • Refutation
        • R(g);CHECK
    • Try
      • R(B);
      • Threat
        • B(K),XP(c)
      • Vars
        • R(g);N_GUARD,XP(I)::QAR2(A)
        • Q(i);P_PINB(K),SBLOCK::R1(B)
        • R(g);P_PINB(K),SBLOCK::QAR(A)
      • Refutation
        • R(b);P_PINP(H),XP(F)
    • Try
      • P(I);
      • Threat
        • QAR2(A)
      • Vars
        • R(g);P_PINB(K),SBLOCK,XP(I)::QAR(A)
      • Refutation
        • R(g);
  • Actual
    • Q(A);
    • Threat
      • B(K),XP(c)
    • Vars
      • R(g);N_GUARD,XP(I)::QAR2(A)
      • Q(i);P_PINB(K),SBLOCK::R(B)
      • R(g);P_PINB(K),SBLOCK::QAB1(A),XP(c)
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