MESON Chess Problem Database

Problem Display
PID: 264931 (3R4/1p1B1p1K/5P2/1Q2p1p1/RN2k3/r1p1N1n1/qP1P2P1/1bB5 w - - 0 1)

Mantha, Srinivas

The Problemist, 1993

3R4/1p1B1p1K/5P2/1Q2p1p1/RN2k3/r1p1N1n1/qP1P2P1/1bB5

#2

12 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4+
      • 2.Sbc2#
    • 1...Kf4+
      • 2.Sd3#
    • 1...Qc4
      • 2.Qxc4#
    • 1...Qa1
      • 2.Qc4#
    • 1...Qxb2
      • 2.Qc4#
    • 1...Rb3
      • 2.Qc4#
  • Tries
    • 1.Sbc2+?
      • 1...Qc4
        • 2.Qxc4#
      • 1...Rxa4!
    • 1.Sd3+?
      • 1...Qc4
        • 2.Qxc4#
        • 2.Qd5#
      • 1...Rxa4!
    • 1.Sbd5+?
      • 1...Qc4
        • 2.Qxc4#
      • 1...Rxa4!
    • 1.Sa6+?
      • 1...Qc4
        • 2.Qxc4#
      • 1...Rxa4!
    • 1.Sc6+?
      • 1...Qc4
        • 2.Qxc4#
      • 1...Rxa4!
    • 1.Bf5+?
      • 1...Kf4
        • 2.Sd3#
        • 2.Sbd5#
      • 1...Sxf5!
    • 1.Bc6+?
      • 1...Kf4+
        • 2.Sd3#
      • 1...Qd5
        • 2.Qc4#
      • 1...bxc6!
    • 1.Qd3+?
      • 1...Kf4
        • 2.Sbd5#
      • 1...Bxd3!
    • 1.Qd5+?
      • 1...Kf4+
        • 2.Sd3#
      • 1...Qxd5!
    • 1.d3+?
      • 1...Kd4
        • 2.Sbc2#
        • 2.Sc6#
        • 2.Qb6#
      • 1...Kf4
        • 2.Sd1#
        • 2.Sf1#
        • 2.Sec2#
        • 2.Sc4#
        • 2.Sg4#
        • 2.Sed5#
        • 2.Sbd5#
      • 1...Bxd3!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Qxe5#
      • 1...Kd4+
        • 2.Bf5#
      • 1...Kf4+
        • 2.d3#
      • 1...Qxc4
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • K(f);CHECK,P-FLIGHT::R(F)+S(G),DCHECK
    • Q(b);N_GUARD::QAR2(H),XQ(b)
    • Q(b);N_GUARD::QAR2(H)
    • Q(b);N_GUARD,XP(B)::QAR2(H)
    • R(c);S_CUTQ(b)::QAR2(H)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • Q(b);N_GUARD,P_SPINQ(b)::QAR2(H),XQ(b)
      • Refutation
        • R(c);XR(F)
    • Try
      • S(G);CHECK
      • Refutation
        • R(c);XR(F)
    • Try
      • S(G);CHECK
      • Vars
        • Q(b);N_GUARD,P_SPINQ(b)::QAR2(H),XQ(b)
      • Refutation
        • R(c);XR(F)
    • Try
      • S(G);CHECK
      • Vars
        • Q(b);N_GUARD,P_SPINQ(b)::QAR2(H),XQ(b)
      • Refutation
        • R(c);XR(F)
    • Try
      • S(G);CHECK
      • Vars
        • Q(b);N_GUARD,P_SPINQ(b)::QAR2(H),XQ(b)
      • Refutation
        • R(c);XR(F)
    • Try
      • B(J);CHECK
      • Refutation
        • S(e);XB(J)
    • Try
      • B(J);CHECK
      • Vars
        • K(f);CHECK,P-FLIGHT::R(F)+S(G),DCHECK
        • Q(b);P_SPINQ(b)::QAR2(H)
      • Refutation
        • P(i);XB(J)
    • Try
      • Q(H);CHECK
      • Vars
        • K(f);N_GUARD,P-FLIGHT,P_PINQ(H)::R(F)+S(G),DCHECK
      • Refutation
        • B(a);XQ(H)
    • Try
      • Q(H);CHECK
      • Vars
        • K(f);CHECK,P-FLIGHT::R(F)+S(G),DCHECK
      • Refutation
        • Q(b);XQ(H)
    • Try
      • P(C);CHECK
      • Refutation
        • B(a);XP(C)
  • Actual
    • S(E);
    • Threat
      • QAR1(H),XP(g)
    • Vars
      • K(f);CHECK,N_GUARD,P-FLIGHT,S_CUTS(e)::R(L)+B(J)
      • K(f);CHECK,N_GUARD,P-FLIGHT,S_CUTB(a)::B(A)+P(C)
      • Q(b);OGATE,XS(E)::QAR2(H),XQ(b)
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